/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:49:16,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:49:16,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:49:16,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:49:16,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:49:16,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:49:16,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:49:16,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:49:16,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:49:16,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:49:16,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:49:16,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:49:16,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:49:16,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:49:16,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:49:16,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:49:16,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:49:16,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:49:16,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:49:16,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:49:16,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:49:16,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:49:16,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:49:16,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:49:16,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 18:49:16,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:49:16,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:49:16,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:49:16,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:49:16,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:49:16,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:49:16,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:49:16,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:49:16,400 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:49:16,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:49:16,401 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:49:16,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:49:16,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:49:16,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:49:16,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:49:16,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:49:16,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:49:16,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:49:16,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:49:16,402 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:49:16,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:49:16,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:49:16,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:49:16,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:49:16,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:49:16,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:49:16,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:49:16,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:49:16,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:49:16,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:49:16,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:49:16,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:49:16,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:49:16,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:49:16,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:49:16,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:49:16,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:49:16,753 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:49:16,754 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:49:16,755 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-08-18 18:49:16,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da54f76e8/a98d76c213614a908229ef8fe4356037/FLAGcc80a7ba0 [2020-08-18 18:49:17,403 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:49:17,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-08-18 18:49:17,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da54f76e8/a98d76c213614a908229ef8fe4356037/FLAGcc80a7ba0 [2020-08-18 18:49:17,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da54f76e8/a98d76c213614a908229ef8fe4356037 [2020-08-18 18:49:17,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:49:17,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:49:17,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:49:17,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:49:17,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:49:17,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:49:17" (1/1) ... [2020-08-18 18:49:17,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7105da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:17, skipping insertion in model container [2020-08-18 18:49:17,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:49:17" (1/1) ... [2020-08-18 18:49:17,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:49:17,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:49:18,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:49:18,207 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:49:18,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:49:18,317 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:49:18,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:18 WrapperNode [2020-08-18 18:49:18,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:49:18,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:49:18,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:49:18,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:49:18,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:18" (1/1) ... [2020-08-18 18:49:18,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:18" (1/1) ... [2020-08-18 18:49:18,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:18" (1/1) ... [2020-08-18 18:49:18,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:18" (1/1) ... [2020-08-18 18:49:18,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:18" (1/1) ... [2020-08-18 18:49:18,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:18" (1/1) ... [2020-08-18 18:49:18,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:18" (1/1) ... [2020-08-18 18:49:18,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:49:18,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:49:18,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:49:18,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:49:18,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 18:49:18,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:49:18,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:49:18,448 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 18:49:18,449 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:49:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:49:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 18:49:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 18:49:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 18:49:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:49:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:49:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:49:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:49:19,182 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:49:19,182 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 18:49:19,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:49:19 BoogieIcfgContainer [2020-08-18 18:49:19,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:49:19,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:49:19,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:49:19,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:49:19,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:49:17" (1/3) ... [2020-08-18 18:49:19,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa35e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:49:19, skipping insertion in model container [2020-08-18 18:49:19,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:49:18" (2/3) ... [2020-08-18 18:49:19,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa35e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:49:19, skipping insertion in model container [2020-08-18 18:49:19,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:49:19" (3/3) ... [2020-08-18 18:49:19,198 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-08-18 18:49:19,209 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:49:19,217 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-08-18 18:49:19,232 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-08-18 18:49:19,258 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:49:19,258 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:49:19,259 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:49:19,259 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:49:19,259 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:49:19,259 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:49:19,260 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:49:19,260 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:49:19,285 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2020-08-18 18:49:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-18 18:49:19,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:19,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:19,293 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:19,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:19,299 INFO L82 PathProgramCache]: Analyzing trace with hash 692755954, now seen corresponding path program 1 times [2020-08-18 18:49:19,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:19,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529653249] [2020-08-18 18:49:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:19,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:19,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529653249] [2020-08-18 18:49:19,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:19,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:49:19,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363328105] [2020-08-18 18:49:19,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:49:19,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:19,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:49:19,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:49:19,572 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 5 states. [2020-08-18 18:49:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:20,224 INFO L93 Difference]: Finished difference Result 143 states and 221 transitions. [2020-08-18 18:49:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:49:20,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-18 18:49:20,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:20,240 INFO L225 Difference]: With dead ends: 143 [2020-08-18 18:49:20,240 INFO L226 Difference]: Without dead ends: 123 [2020-08-18 18:49:20,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:49:20,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-18 18:49:20,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 118. [2020-08-18 18:49:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 18:49:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2020-08-18 18:49:20,296 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 11 [2020-08-18 18:49:20,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:20,296 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2020-08-18 18:49:20,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:49:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2020-08-18 18:49:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 18:49:20,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:20,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:20,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:49:20,299 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:20,299 INFO L82 PathProgramCache]: Analyzing trace with hash 601163, now seen corresponding path program 1 times [2020-08-18 18:49:20,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:20,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420212745] [2020-08-18 18:49:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:20,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:20,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420212745] [2020-08-18 18:49:20,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:20,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:49:20,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95566613] [2020-08-18 18:49:20,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:49:20,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:20,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:49:20,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:49:20,388 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand 5 states. [2020-08-18 18:49:20,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:20,749 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2020-08-18 18:49:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:49:20,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-18 18:49:20,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:20,754 INFO L225 Difference]: With dead ends: 121 [2020-08-18 18:49:20,755 INFO L226 Difference]: Without dead ends: 113 [2020-08-18 18:49:20,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:49:20,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-18 18:49:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-08-18 18:49:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-18 18:49:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2020-08-18 18:49:20,782 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 12 [2020-08-18 18:49:20,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:20,783 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2020-08-18 18:49:20,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:49:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2020-08-18 18:49:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 18:49:20,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:20,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:20,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:49:20,785 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:20,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:20,786 INFO L82 PathProgramCache]: Analyzing trace with hash -438066310, now seen corresponding path program 1 times [2020-08-18 18:49:20,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:20,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386818589] [2020-08-18 18:49:20,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:20,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:20,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386818589] [2020-08-18 18:49:20,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:20,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:49:20,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882977229] [2020-08-18 18:49:20,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:49:20,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:20,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:49:20,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:49:20,879 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand 6 states. [2020-08-18 18:49:21,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:21,215 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2020-08-18 18:49:21,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:49:21,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-18 18:49:21,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:21,217 INFO L225 Difference]: With dead ends: 113 [2020-08-18 18:49:21,217 INFO L226 Difference]: Without dead ends: 111 [2020-08-18 18:49:21,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:49:21,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-18 18:49:21,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-08-18 18:49:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-18 18:49:21,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2020-08-18 18:49:21,227 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 15 [2020-08-18 18:49:21,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:21,228 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2020-08-18 18:49:21,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:49:21,228 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2020-08-18 18:49:21,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 18:49:21,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:21,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:21,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:49:21,230 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:21,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:21,230 INFO L82 PathProgramCache]: Analyzing trace with hash -695150622, now seen corresponding path program 1 times [2020-08-18 18:49:21,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:21,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604508875] [2020-08-18 18:49:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:21,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:21,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604508875] [2020-08-18 18:49:21,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:21,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:49:21,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146180760] [2020-08-18 18:49:21,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:49:21,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:21,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:49:21,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:49:21,333 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 5 states. [2020-08-18 18:49:21,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:21,595 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-08-18 18:49:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:49:21,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-18 18:49:21,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:21,597 INFO L225 Difference]: With dead ends: 111 [2020-08-18 18:49:21,598 INFO L226 Difference]: Without dead ends: 107 [2020-08-18 18:49:21,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:49:21,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-08-18 18:49:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-08-18 18:49:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-18 18:49:21,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2020-08-18 18:49:21,607 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 16 [2020-08-18 18:49:21,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:21,607 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2020-08-18 18:49:21,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:49:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2020-08-18 18:49:21,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 18:49:21,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:21,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:21,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:49:21,609 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:21,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:21,610 INFO L82 PathProgramCache]: Analyzing trace with hash -61564757, now seen corresponding path program 1 times [2020-08-18 18:49:21,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:21,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229021356] [2020-08-18 18:49:21,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:21,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:21,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229021356] [2020-08-18 18:49:21,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:21,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:49:21,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729508671] [2020-08-18 18:49:21,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:49:21,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:21,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:49:21,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:49:21,711 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand 6 states. [2020-08-18 18:49:22,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:22,065 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2020-08-18 18:49:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:49:22,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-18 18:49:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:22,067 INFO L225 Difference]: With dead ends: 125 [2020-08-18 18:49:22,067 INFO L226 Difference]: Without dead ends: 123 [2020-08-18 18:49:22,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:49:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-18 18:49:22,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2020-08-18 18:49:22,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 18:49:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2020-08-18 18:49:22,076 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 17 [2020-08-18 18:49:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:22,077 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2020-08-18 18:49:22,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:49:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2020-08-18 18:49:22,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 18:49:22,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:22,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:22,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:49:22,078 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:22,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:22,079 INFO L82 PathProgramCache]: Analyzing trace with hash -60025557, now seen corresponding path program 1 times [2020-08-18 18:49:22,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:22,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601045879] [2020-08-18 18:49:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:22,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:22,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601045879] [2020-08-18 18:49:22,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:22,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:49:22,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305253626] [2020-08-18 18:49:22,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:49:22,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:22,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:49:22,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:49:22,175 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand 6 states. [2020-08-18 18:49:22,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:22,493 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-08-18 18:49:22,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:49:22,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-18 18:49:22,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:22,497 INFO L225 Difference]: With dead ends: 105 [2020-08-18 18:49:22,497 INFO L226 Difference]: Without dead ends: 103 [2020-08-18 18:49:22,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:49:22,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-08-18 18:49:22,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-08-18 18:49:22,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-08-18 18:49:22,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2020-08-18 18:49:22,505 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2020-08-18 18:49:22,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:22,506 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2020-08-18 18:49:22,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:49:22,506 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2020-08-18 18:49:22,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 18:49:22,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:22,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:22,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:49:22,507 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:22,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:22,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1907138927, now seen corresponding path program 1 times [2020-08-18 18:49:22,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:22,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496297595] [2020-08-18 18:49:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:22,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:22,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496297595] [2020-08-18 18:49:22,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:22,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:49:22,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983722305] [2020-08-18 18:49:22,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:49:22,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:22,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:49:22,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:49:22,575 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand 6 states. [2020-08-18 18:49:22,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:22,957 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-08-18 18:49:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 18:49:22,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 18:49:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:22,960 INFO L225 Difference]: With dead ends: 124 [2020-08-18 18:49:22,960 INFO L226 Difference]: Without dead ends: 122 [2020-08-18 18:49:22,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:49:22,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-18 18:49:22,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2020-08-18 18:49:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-18 18:49:22,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-08-18 18:49:22,967 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 18 [2020-08-18 18:49:22,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:22,968 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-08-18 18:49:22,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:49:22,968 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-08-18 18:49:22,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 18:49:22,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:22,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:22,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:49:22,970 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:22,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:22,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1908504347, now seen corresponding path program 1 times [2020-08-18 18:49:22,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:22,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869299264] [2020-08-18 18:49:22,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:23,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:23,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869299264] [2020-08-18 18:49:23,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:23,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:49:23,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537512771] [2020-08-18 18:49:23,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:49:23,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:23,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:49:23,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:49:23,038 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 6 states. [2020-08-18 18:49:23,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:23,378 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-08-18 18:49:23,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:49:23,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 18:49:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:23,380 INFO L225 Difference]: With dead ends: 116 [2020-08-18 18:49:23,380 INFO L226 Difference]: Without dead ends: 114 [2020-08-18 18:49:23,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:49:23,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-18 18:49:23,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2020-08-18 18:49:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-18 18:49:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-08-18 18:49:23,387 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 18 [2020-08-18 18:49:23,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:23,387 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-08-18 18:49:23,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:49:23,388 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-08-18 18:49:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 18:49:23,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:23,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:23,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:49:23,389 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:23,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:23,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1860789097, now seen corresponding path program 1 times [2020-08-18 18:49:23,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:23,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658301436] [2020-08-18 18:49:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:23,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:23,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658301436] [2020-08-18 18:49:23,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:23,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:49:23,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250829364] [2020-08-18 18:49:23,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:49:23,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:23,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:49:23,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:49:23,473 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-08-18 18:49:23,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:23,775 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2020-08-18 18:49:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 18:49:23,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 18:49:23,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:23,777 INFO L225 Difference]: With dead ends: 99 [2020-08-18 18:49:23,777 INFO L226 Difference]: Without dead ends: 95 [2020-08-18 18:49:23,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:49:23,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-18 18:49:23,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-08-18 18:49:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-18 18:49:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-08-18 18:49:23,785 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 18 [2020-08-18 18:49:23,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:23,786 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-08-18 18:49:23,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:49:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-08-18 18:49:23,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 18:49:23,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:23,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:23,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 18:49:23,788 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:23,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:23,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1008238558, now seen corresponding path program 1 times [2020-08-18 18:49:23,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:23,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487335491] [2020-08-18 18:49:23,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:23,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:23,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487335491] [2020-08-18 18:49:23,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:23,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:49:23,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984845398] [2020-08-18 18:49:23,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:49:23,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:23,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:49:23,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:49:23,876 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 6 states. [2020-08-18 18:49:24,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:24,242 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2020-08-18 18:49:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:49:24,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-18 18:49:24,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:24,244 INFO L225 Difference]: With dead ends: 111 [2020-08-18 18:49:24,244 INFO L226 Difference]: Without dead ends: 109 [2020-08-18 18:49:24,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:49:24,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-18 18:49:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2020-08-18 18:49:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-18 18:49:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-08-18 18:49:24,250 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 19 [2020-08-18 18:49:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:24,250 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-08-18 18:49:24,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:49:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-08-18 18:49:24,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 18:49:24,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:24,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:24,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 18:49:24,252 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:24,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:24,252 INFO L82 PathProgramCache]: Analyzing trace with hash -121545016, now seen corresponding path program 1 times [2020-08-18 18:49:24,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:24,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898303880] [2020-08-18 18:49:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:24,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:24,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:24,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898303880] [2020-08-18 18:49:24,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:24,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:49:24,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469739890] [2020-08-18 18:49:24,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:49:24,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:24,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:49:24,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:49:24,317 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 5 states. [2020-08-18 18:49:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:24,524 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-08-18 18:49:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:49:24,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-18 18:49:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:24,526 INFO L225 Difference]: With dead ends: 93 [2020-08-18 18:49:24,526 INFO L226 Difference]: Without dead ends: 91 [2020-08-18 18:49:24,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:49:24,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-08-18 18:49:24,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-08-18 18:49:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-18 18:49:24,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-08-18 18:49:24,531 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 20 [2020-08-18 18:49:24,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:24,532 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-08-18 18:49:24,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:49:24,532 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-08-18 18:49:24,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 18:49:24,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:24,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:24,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 18:49:24,533 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:24,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:24,534 INFO L82 PathProgramCache]: Analyzing trace with hash 527074935, now seen corresponding path program 1 times [2020-08-18 18:49:24,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:24,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490117202] [2020-08-18 18:49:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:24,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:24,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490117202] [2020-08-18 18:49:24,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:24,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:49:24,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308863496] [2020-08-18 18:49:24,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:49:24,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:24,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:49:24,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:49:24,599 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 5 states. [2020-08-18 18:49:24,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:24,819 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2020-08-18 18:49:24,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:49:24,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-18 18:49:24,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:24,821 INFO L225 Difference]: With dead ends: 91 [2020-08-18 18:49:24,821 INFO L226 Difference]: Without dead ends: 58 [2020-08-18 18:49:24,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 18:49:24,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-18 18:49:24,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-08-18 18:49:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-18 18:49:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-08-18 18:49:24,827 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 21 [2020-08-18 18:49:24,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:24,827 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-08-18 18:49:24,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:49:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-08-18 18:49:24,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 18:49:24,833 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:24,833 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:24,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 18:49:24,834 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:24,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:24,834 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833109, now seen corresponding path program 1 times [2020-08-18 18:49:24,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:24,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985369585] [2020-08-18 18:49:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:25,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:25,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:25,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985369585] [2020-08-18 18:49:25,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:25,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 18:49:25,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228766667] [2020-08-18 18:49:25,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 18:49:25,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:25,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 18:49:25,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:49:25,085 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 14 states. [2020-08-18 18:49:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:25,417 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-08-18 18:49:25,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 18:49:25,418 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-08-18 18:49:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:25,419 INFO L225 Difference]: With dead ends: 67 [2020-08-18 18:49:25,419 INFO L226 Difference]: Without dead ends: 65 [2020-08-18 18:49:25,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2020-08-18 18:49:25,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-18 18:49:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2020-08-18 18:49:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-18 18:49:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-08-18 18:49:25,423 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 48 [2020-08-18 18:49:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:25,424 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-08-18 18:49:25,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 18:49:25,424 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-08-18 18:49:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 18:49:25,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:25,425 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:25,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 18:49:25,425 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:25,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:25,426 INFO L82 PathProgramCache]: Analyzing trace with hash 2058819207, now seen corresponding path program 1 times [2020-08-18 18:49:25,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:25,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89675057] [2020-08-18 18:49:25,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:25,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:25,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89675057] [2020-08-18 18:49:25,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:25,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 18:49:25,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894696139] [2020-08-18 18:49:25,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 18:49:25,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:25,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 18:49:25,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:49:25,594 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 14 states. [2020-08-18 18:49:25,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:25,904 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-08-18 18:49:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 18:49:25,905 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-08-18 18:49:25,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:25,907 INFO L225 Difference]: With dead ends: 56 [2020-08-18 18:49:25,907 INFO L226 Difference]: Without dead ends: 54 [2020-08-18 18:49:25,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2020-08-18 18:49:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-18 18:49:25,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-18 18:49:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-18 18:49:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-08-18 18:49:25,912 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 48 [2020-08-18 18:49:25,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:25,913 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-08-18 18:49:25,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 18:49:25,913 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-08-18 18:49:25,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-18 18:49:25,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:25,914 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:25,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 18:49:25,914 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:25,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:25,915 INFO L82 PathProgramCache]: Analyzing trace with hash -600679635, now seen corresponding path program 1 times [2020-08-18 18:49:25,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:25,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674268432] [2020-08-18 18:49:25,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:26,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:26,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674268432] [2020-08-18 18:49:26,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:26,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:49:26,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168343845] [2020-08-18 18:49:26,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:49:26,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:26,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:49:26,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:49:26,136 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 6 states. [2020-08-18 18:49:26,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:26,327 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-08-18 18:49:26,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 18:49:26,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-08-18 18:49:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:26,329 INFO L225 Difference]: With dead ends: 62 [2020-08-18 18:49:26,329 INFO L226 Difference]: Without dead ends: 60 [2020-08-18 18:49:26,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 17 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:49:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-18 18:49:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-08-18 18:49:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-18 18:49:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-08-18 18:49:26,334 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2020-08-18 18:49:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:26,334 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-08-18 18:49:26,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:49:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-08-18 18:49:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-18 18:49:26,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:49:26,336 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:49:26,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 18:49:26,336 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:49:26,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:49:26,336 INFO L82 PathProgramCache]: Analyzing trace with hash -601110611, now seen corresponding path program 1 times [2020-08-18 18:49:26,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:49:26,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134827284] [2020-08-18 18:49:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:49:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:26,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:49:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:49:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:49:26,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134827284] [2020-08-18 18:49:26,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:49:26,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:49:26,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765431676] [2020-08-18 18:49:26,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:49:26,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:49:26,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:49:26,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:49:26,562 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 6 states. [2020-08-18 18:49:26,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:49:26,734 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-08-18 18:49:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 18:49:26,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-08-18 18:49:26,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:49:26,735 INFO L225 Difference]: With dead ends: 52 [2020-08-18 18:49:26,735 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 18:49:26,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 17 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:49:26,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 18:49:26,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 18:49:26,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 18:49:26,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 18:49:26,737 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-08-18 18:49:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:49:26,737 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 18:49:26,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:49:26,738 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 18:49:26,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 18:49:26,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 18:49:26,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 18:49:26,866 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 18:49:26,867 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_2624_0~0 |old(~__tmp_2624_0~0)|) (= ~__tmp_2624_1~0 |old(~__tmp_2624_1~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_2598~0 |old(~__return_2598~0)|) (= ~__tmp_3137_1~0 |old(~__tmp_3137_1~0)|) (= ~__tmp_3137_0~0 |old(~__tmp_3137_0~0)|)) [2020-08-18 18:49:26,867 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 18:49:26,867 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 18:49:26,867 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 18:49:26,867 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 18:49:26,868 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 18:49:26,868 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-18 18:49:26,868 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-18 18:49:26,868 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-18 18:49:26,868 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-18 18:49:26,868 INFO L268 CegarLoopResult]: For program point L927(lines 927 939) no Hoare annotation was computed. [2020-08-18 18:49:26,869 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2020-08-18 18:49:26,869 INFO L268 CegarLoopResult]: For program point L217(line 217) no Hoare annotation was computed. [2020-08-18 18:49:26,869 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 15 1004) no Hoare annotation was computed. [2020-08-18 18:49:26,869 INFO L268 CegarLoopResult]: For program point L663(lines 663 961) no Hoare annotation was computed. [2020-08-18 18:49:26,869 INFO L268 CegarLoopResult]: For program point L432(lines 432 983) no Hoare annotation was computed. [2020-08-18 18:49:26,869 INFO L268 CegarLoopResult]: For program point L267(line 267) no Hoare annotation was computed. [2020-08-18 18:49:26,870 INFO L268 CegarLoopResult]: For program point L647(lines 647 963) no Hoare annotation was computed. [2020-08-18 18:49:26,870 INFO L268 CegarLoopResult]: For program point L383(lines 383 986) no Hoare annotation was computed. [2020-08-18 18:49:26,870 INFO L268 CegarLoopResult]: For program point L20(lines 20 1003) no Hoare annotation was computed. [2020-08-18 18:49:26,870 INFO L268 CegarLoopResult]: For program point L466(lines 466 490) no Hoare annotation was computed. [2020-08-18 18:49:26,870 INFO L268 CegarLoopResult]: For program point L879(lines 879 905) no Hoare annotation was computed. [2020-08-18 18:49:26,870 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 917) no Hoare annotation was computed. [2020-08-18 18:49:26,870 INFO L268 CegarLoopResult]: For program point L169(lines 169 191) no Hoare annotation was computed. [2020-08-18 18:49:26,870 INFO L268 CegarLoopResult]: For program point L681(lines 681 692) no Hoare annotation was computed. [2020-08-18 18:49:26,871 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-08-18 18:49:26,871 INFO L268 CegarLoopResult]: For program point L70(lines 70 286) no Hoare annotation was computed. [2020-08-18 18:49:26,871 INFO L268 CegarLoopResult]: For program point L929(line 929) no Hoare annotation was computed. [2020-08-18 18:49:26,871 INFO L268 CegarLoopResult]: For program point L731(lines 731 955) no Hoare annotation was computed. [2020-08-18 18:49:26,871 INFO L268 CegarLoopResult]: For program point L153(lines 153 232) no Hoare annotation was computed. [2020-08-18 18:49:26,871 INFO L268 CegarLoopResult]: For program point L500(lines 500 977) no Hoare annotation was computed. [2020-08-18 18:49:26,871 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 15 1004) no Hoare annotation was computed. [2020-08-18 18:49:26,871 INFO L268 CegarLoopResult]: For program point L203(lines 203 229) no Hoare annotation was computed. [2020-08-18 18:49:26,872 INFO L268 CegarLoopResult]: For program point L715(lines 715 957) no Hoare annotation was computed. [2020-08-18 18:49:26,872 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 893) no Hoare annotation was computed. [2020-08-18 18:49:26,872 INFO L268 CegarLoopResult]: For program point L451(lines 451 980) no Hoare annotation was computed. [2020-08-18 18:49:26,872 INFO L268 CegarLoopResult]: For program point L864(lines 864 944) no Hoare annotation was computed. [2020-08-18 18:49:26,872 INFO L268 CegarLoopResult]: For program point L253(lines 253 275) no Hoare annotation was computed. [2020-08-18 18:49:26,872 INFO L268 CegarLoopResult]: For program point L534(lines 534 558) no Hoare annotation was computed. [2020-08-18 18:49:26,872 INFO L268 CegarLoopResult]: For program point L881(line 881) no Hoare annotation was computed. [2020-08-18 18:49:26,872 INFO L268 CegarLoopResult]: For program point L749(lines 749 760) no Hoare annotation was computed. [2020-08-18 18:49:26,873 INFO L268 CegarLoopResult]: For program point L171(line 171) no Hoare annotation was computed. [2020-08-18 18:49:26,873 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 205) no Hoare annotation was computed. [2020-08-18 18:49:26,873 INFO L268 CegarLoopResult]: For program point L799(lines 799 949) no Hoare annotation was computed. [2020-08-18 18:49:26,873 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-08-18 18:49:26,873 INFO L268 CegarLoopResult]: For program point L568(lines 568 971) no Hoare annotation was computed. [2020-08-18 18:49:26,873 INFO L268 CegarLoopResult]: For program point L915(lines 915 941) no Hoare annotation was computed. [2020-08-18 18:49:26,873 INFO L268 CegarLoopResult]: For program point L783(lines 783 951) no Hoare annotation was computed. [2020-08-18 18:49:26,873 INFO L268 CegarLoopResult]: For program point L205(line 205) no Hoare annotation was computed. [2020-08-18 18:49:26,874 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 929) no Hoare annotation was computed. [2020-08-18 18:49:26,874 INFO L268 CegarLoopResult]: For program point L519(lines 519 974) no Hoare annotation was computed. [2020-08-18 18:49:26,874 INFO L264 CegarLoopResult]: At program point L866(lines 24 998) the Hoare annotation is: (and (<= main_~main__t~0 main_~main__tagbuf_len~0) (<= 0 main_~main__t~0)) [2020-08-18 18:49:26,874 INFO L268 CegarLoopResult]: For program point L255(line 255) no Hoare annotation was computed. [2020-08-18 18:49:26,874 INFO L268 CegarLoopResult]: For program point L602(lines 602 626) no Hoare annotation was computed. [2020-08-18 18:49:26,874 INFO L268 CegarLoopResult]: For program point L24(lines 24 998) no Hoare annotation was computed. [2020-08-18 18:49:26,874 INFO L268 CegarLoopResult]: For program point L817(lines 817 828) no Hoare annotation was computed. [2020-08-18 18:49:26,875 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2020-08-18 18:49:26,875 INFO L268 CegarLoopResult]: For program point L636(lines 636 965) no Hoare annotation was computed. [2020-08-18 18:49:26,875 INFO L268 CegarLoopResult]: For program point L917(line 917) no Hoare annotation was computed. [2020-08-18 18:49:26,875 INFO L268 CegarLoopResult]: For program point L851(lines 851 945) no Hoare annotation was computed. [2020-08-18 18:49:26,875 INFO L268 CegarLoopResult]: For program point L141(lines 141 234) no Hoare annotation was computed. [2020-08-18 18:49:26,875 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2020-08-18 18:49:26,875 INFO L268 CegarLoopResult]: For program point L587(lines 587 968) no Hoare annotation was computed. [2020-08-18 18:49:26,875 INFO L268 CegarLoopResult]: For program point L323(lines 323 991) no Hoare annotation was computed. [2020-08-18 18:49:26,876 INFO L268 CegarLoopResult]: For program point L670(lines 670 694) no Hoare annotation was computed. [2020-08-18 18:49:26,876 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-08-18 18:49:26,876 INFO L268 CegarLoopResult]: For program point L307(lines 307 993) no Hoare annotation was computed. [2020-08-18 18:49:26,876 INFO L264 CegarLoopResult]: At program point L902(lines 63 997) the Hoare annotation is: (and (<= 1 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2020-08-18 18:49:26,876 INFO L268 CegarLoopResult]: For program point L704(lines 704 959) no Hoare annotation was computed. [2020-08-18 18:49:26,876 INFO L268 CegarLoopResult]: For program point L341(lines 341 352) no Hoare annotation was computed. [2020-08-18 18:49:26,876 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-08-18 18:49:26,877 INFO L268 CegarLoopResult]: For program point L655(lines 655 962) no Hoare annotation was computed. [2020-08-18 18:49:26,877 INFO L268 CegarLoopResult]: For program point L44(lines 44 54) no Hoare annotation was computed. [2020-08-18 18:49:26,877 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 267) no Hoare annotation was computed. [2020-08-18 18:49:26,877 INFO L264 CegarLoopResult]: At program point L1002(lines 20 1003) the Hoare annotation is: (or (and (= ~__tmp_2624_0~0 |old(~__tmp_2624_0~0)|) (= ~__tmp_2624_1~0 |old(~__tmp_2624_1~0)|) (= |old(~__return_2598~0)| ~__return_2598~0) (= ~__tmp_3137_1~0 |old(~__tmp_3137_1~0)|) (= ~__tmp_3137_0~0 |old(~__tmp_3137_0~0)|)) (<= 0 main_~main__t~0)) [2020-08-18 18:49:26,877 INFO L268 CegarLoopResult]: For program point L391(lines 391 985) no Hoare annotation was computed. [2020-08-18 18:49:26,877 INFO L268 CegarLoopResult]: For program point L738(lines 738 762) no Hoare annotation was computed. [2020-08-18 18:49:26,877 INFO L268 CegarLoopResult]: For program point L94(lines 94 283) no Hoare annotation was computed. [2020-08-18 18:49:26,878 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 171) no Hoare annotation was computed. [2020-08-18 18:49:26,878 INFO L268 CegarLoopResult]: For program point L375(lines 375 987) no Hoare annotation was computed. [2020-08-18 18:49:26,878 INFO L268 CegarLoopResult]: For program point L772(lines 772 953) no Hoare annotation was computed. [2020-08-18 18:49:26,878 INFO L268 CegarLoopResult]: For program point L409(lines 409 420) no Hoare annotation was computed. [2020-08-18 18:49:26,878 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-08-18 18:49:26,878 INFO L268 CegarLoopResult]: For program point L723(lines 723 956) no Hoare annotation was computed. [2020-08-18 18:49:26,878 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-08-18 18:49:26,878 INFO L268 CegarLoopResult]: For program point L459(lines 459 979) no Hoare annotation was computed. [2020-08-18 18:49:26,879 INFO L264 CegarLoopResult]: At program point L938(lines 856 945) the Hoare annotation is: (and (<= 9 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2020-08-18 18:49:26,879 INFO L268 CegarLoopResult]: For program point L872(lines 872 943) no Hoare annotation was computed. [2020-08-18 18:49:26,879 INFO L268 CegarLoopResult]: For program point L806(lines 806 830) no Hoare annotation was computed. [2020-08-18 18:49:26,879 INFO L268 CegarLoopResult]: For program point L162(lines 162 231) no Hoare annotation was computed. [2020-08-18 18:49:26,879 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-08-18 18:49:26,879 INFO L268 CegarLoopResult]: For program point L63(lines 63 997) no Hoare annotation was computed. [2020-08-18 18:49:26,879 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 15 1004) the Hoare annotation is: (and (= ~__tmp_2624_0~0 |old(~__tmp_2624_0~0)|) (= ~__tmp_2624_1~0 |old(~__tmp_2624_1~0)|) (= |old(~__return_2598~0)| ~__return_2598~0) (= ~__tmp_3137_1~0 |old(~__tmp_3137_1~0)|) (= ~__tmp_3137_0~0 |old(~__tmp_3137_0~0)|)) [2020-08-18 18:49:26,880 INFO L268 CegarLoopResult]: For program point L443(lines 443 981) no Hoare annotation was computed. [2020-08-18 18:49:26,880 INFO L268 CegarLoopResult]: For program point L113(lines 113 121) no Hoare annotation was computed. [2020-08-18 18:49:26,880 INFO L268 CegarLoopResult]: For program point L840(lines 840 947) no Hoare annotation was computed. [2020-08-18 18:49:26,880 INFO L268 CegarLoopResult]: For program point L130(lines 130 282) no Hoare annotation was computed. [2020-08-18 18:49:26,880 INFO L268 CegarLoopResult]: For program point L477(lines 477 488) no Hoare annotation was computed. [2020-08-18 18:49:26,880 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 183) no Hoare annotation was computed. [2020-08-18 18:49:26,880 INFO L268 CegarLoopResult]: For program point L791(lines 791 950) no Hoare annotation was computed. [2020-08-18 18:49:26,880 INFO L268 CegarLoopResult]: For program point L246(lines 246 281) no Hoare annotation was computed. [2020-08-18 18:49:26,881 INFO L268 CegarLoopResult]: For program point L81(lines 81 284) no Hoare annotation was computed. [2020-08-18 18:49:26,881 INFO L268 CegarLoopResult]: For program point L527(lines 527 973) no Hoare annotation was computed. [2020-08-18 18:49:26,881 INFO L268 CegarLoopResult]: For program point L296(lines 296 995) no Hoare annotation was computed. [2020-08-18 18:49:26,881 INFO L268 CegarLoopResult]: For program point L32(lines 32 56) no Hoare annotation was computed. [2020-08-18 18:49:26,881 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2020-08-18 18:49:26,881 INFO L268 CegarLoopResult]: For program point L511(lines 511 975) no Hoare annotation was computed. [2020-08-18 18:49:26,881 INFO L268 CegarLoopResult]: For program point L891(lines 891 903) no Hoare annotation was computed. [2020-08-18 18:49:26,881 INFO L264 CegarLoopResult]: At program point L280(lines 130 282) the Hoare annotation is: (and (<= (+ main_~main__t~0 1) main_~main__tagbuf_len~0) (<= 1 main_~main__t~0)) [2020-08-18 18:49:26,882 INFO L268 CegarLoopResult]: For program point L181(lines 181 189) no Hoare annotation was computed. [2020-08-18 18:49:26,882 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-08-18 18:49:26,882 INFO L268 CegarLoopResult]: For program point L330(lines 330 354) no Hoare annotation was computed. [2020-08-18 18:49:26,882 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-08-18 18:49:26,882 INFO L268 CegarLoopResult]: For program point L545(lines 545 556) no Hoare annotation was computed. [2020-08-18 18:49:26,882 INFO L268 CegarLoopResult]: For program point L215(lines 215 227) no Hoare annotation was computed. [2020-08-18 18:49:26,882 INFO L268 CegarLoopResult]: For program point L595(lines 595 967) no Hoare annotation was computed. [2020-08-18 18:49:26,882 INFO L268 CegarLoopResult]: For program point L364(lines 364 989) no Hoare annotation was computed. [2020-08-18 18:49:26,882 INFO L268 CegarLoopResult]: For program point L265(lines 265 273) no Hoare annotation was computed. [2020-08-18 18:49:26,883 INFO L268 CegarLoopResult]: For program point L579(lines 579 969) no Hoare annotation was computed. [2020-08-18 18:49:26,883 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-08-18 18:49:26,883 INFO L268 CegarLoopResult]: For program point L893(line 893) no Hoare annotation was computed. [2020-08-18 18:49:26,883 INFO L268 CegarLoopResult]: For program point L315(lines 315 992) no Hoare annotation was computed. [2020-08-18 18:49:26,883 INFO L268 CegarLoopResult]: For program point L183(line 183) no Hoare annotation was computed. [2020-08-18 18:49:26,883 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 881) no Hoare annotation was computed. [2020-08-18 18:49:26,883 INFO L268 CegarLoopResult]: For program point L398(lines 398 422) no Hoare annotation was computed. [2020-08-18 18:49:26,883 INFO L268 CegarLoopResult]: For program point L134(lines 134 240) no Hoare annotation was computed. [2020-08-18 18:49:26,884 INFO L268 CegarLoopResult]: For program point L101(lines 101 123) no Hoare annotation was computed. [2020-08-18 18:49:26,884 INFO L268 CegarLoopResult]: For program point L613(lines 613 624) no Hoare annotation was computed. [2020-08-18 18:49:26,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:49:26 BoogieIcfgContainer [2020-08-18 18:49:26,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:49:26,910 INFO L168 Benchmark]: Toolchain (without parser) took 9176.78 ms. Allocated memory was 138.9 MB in the beginning and 317.2 MB in the end (delta: 178.3 MB). Free memory was 101.1 MB in the beginning and 223.1 MB in the end (delta: -122.1 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:26,910 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:49:26,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.27 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 174.9 MB in the end (delta: -74.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:26,912 INFO L168 Benchmark]: Boogie Preprocessor took 59.66 ms. Allocated memory is still 201.9 MB. Free memory was 174.9 MB in the beginning and 172.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:26,913 INFO L168 Benchmark]: RCFGBuilder took 809.72 ms. Allocated memory is still 201.9 MB. Free memory was 172.8 MB in the beginning and 122.4 MB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:26,914 INFO L168 Benchmark]: TraceAbstraction took 7716.85 ms. Allocated memory was 201.9 MB in the beginning and 317.2 MB in the end (delta: 115.3 MB). Free memory was 121.7 MB in the beginning and 223.1 MB in the end (delta: -101.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-08-18 18:49:26,917 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 585.27 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 174.9 MB in the end (delta: -74.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.66 ms. Allocated memory is still 201.9 MB. Free memory was 174.9 MB in the beginning and 172.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 809.72 ms. Allocated memory is still 201.9 MB. Free memory was 172.8 MB in the beginning and 122.4 MB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7716.85 ms. Allocated memory was 201.9 MB in the beginning and 317.2 MB in the end (delta: 115.3 MB). Free memory was 121.7 MB in the beginning and 223.1 MB in the end (delta: -101.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 929]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 183]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 205]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 893]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 217]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 255]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 917]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 881]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 143]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 267]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 103]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 171]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 155]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 115]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((__tmp_2624_0 == \old(__tmp_2624_0) && __tmp_2624_1 == \old(__tmp_2624_1)) && \old(__return_2598) == __return_2598) && __tmp_3137_1 == \old(__tmp_3137_1)) && __tmp_3137_0 == \old(__tmp_3137_0)) || 0 <= main__t - InvariantResult [Line: 856]: Loop Invariant Derived loop invariant: 9 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: main__t + 1 <= main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: main__t <= main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 769 SDtfs, 2593 SDslu, 667 SDs, 0 SdLazy, 3420 SolverSat, 507 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 231 GetRequests, 58 SyntacticMatches, 36 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred 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: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 92 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 87 HoareAnnotationTreeSize, 9 FomulaSimplifications, 649 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 396 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 380 ConstructedInterpolants, 0 QuantifiedInterpolants, 43150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...