/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 17:28:08,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:28:08,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:28:08,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:28:08,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:28:08,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:28:08,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:28:08,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:28:08,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:28:08,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:28:08,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:28:08,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:28:08,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:28:08,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:28:08,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:28:08,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:28:08,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:28:08,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:28:08,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:28:08,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:28:08,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:28:08,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:28:08,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:28:08,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:28:08,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:28:08,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:28:08,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:28:08,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:28:08,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:28:08,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:28:08,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:28:08,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:28:08,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:28:08,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:28:08,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:28:08,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:28:08,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:28:08,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:28:08,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:28:08,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:28:08,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:28:08,129 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 [2020-08-21 17:28:08,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:28:08,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:28:08,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:28:08,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:28:08,156 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:28:08,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:28:08,156 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:28:08,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:28:08,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:28:08,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:28:08,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:28:08,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:28:08,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:28:08,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:28:08,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:28:08,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:28:08,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:28:08,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:28:08,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:28:08,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:28:08,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:28:08,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:28:08,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:28:08,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:28:08,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:28:08,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:28:08,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:28:08,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:28:08,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:28:08,161 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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:28:08,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:28:08,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:28:08,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:28:08,456 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:28:08,456 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:28:08,457 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-08-21 17:28:08,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd160ec00/74514fae64b44e279dbe9067715cc403/FLAG690827b78 [2020-08-21 17:28:09,053 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:28:09,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-08-21 17:28:09,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd160ec00/74514fae64b44e279dbe9067715cc403/FLAG690827b78 [2020-08-21 17:28:09,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd160ec00/74514fae64b44e279dbe9067715cc403 [2020-08-21 17:28:09,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:28:09,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:28:09,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:28:09,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:28:09,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:28:09,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:28:09" (1/1) ... [2020-08-21 17:28:09,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5955ed45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:09, skipping insertion in model container [2020-08-21 17:28:09,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:28:09" (1/1) ... [2020-08-21 17:28:09,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:28:09,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:28:09,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:28:09,766 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:28:09,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:28:09,854 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:28:09,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:09 WrapperNode [2020-08-21 17:28:09,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:28:09,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:28:09,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:28:09,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:28:09,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:09" (1/1) ... [2020-08-21 17:28:09,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:09" (1/1) ... [2020-08-21 17:28:09,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:09" (1/1) ... [2020-08-21 17:28:09,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:09" (1/1) ... [2020-08-21 17:28:09,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:09" (1/1) ... [2020-08-21 17:28:09,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:09" (1/1) ... [2020-08-21 17:28:10,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:09" (1/1) ... [2020-08-21 17:28:10,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:28:10,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:28:10,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:28:10,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:28:10,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:09" (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 [2020-08-21 17:28:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:28:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:28:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 17:28:10,076 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:28:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:28:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 17:28:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 17:28:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 17:28:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:28:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:28:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:28:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:28:10,834 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:28:10,834 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 17:28:10,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:28:10 BoogieIcfgContainer [2020-08-21 17:28:10,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:28:10,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:28:10,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:28:10,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:28:10,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:28:09" (1/3) ... [2020-08-21 17:28:10,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97d9715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:28:10, skipping insertion in model container [2020-08-21 17:28:10,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:28:09" (2/3) ... [2020-08-21 17:28:10,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@97d9715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:28:10, skipping insertion in model container [2020-08-21 17:28:10,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:28:10" (3/3) ... [2020-08-21 17:28:10,850 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-08-21 17:28:10,861 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:28:10,869 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-08-21 17:28:10,885 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-08-21 17:28:10,913 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:28:10,914 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:28:10,914 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:28:10,914 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:28:10,915 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:28:10,915 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:28:10,915 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:28:10,915 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:28:10,941 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2020-08-21 17:28:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 17:28:10,948 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:10,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:10,950 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]=== [2020-08-21 17:28:10,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:10,956 INFO L82 PathProgramCache]: Analyzing trace with hash 692755954, now seen corresponding path program 1 times [2020-08-21 17:28:10,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:10,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061264676] [2020-08-21 17:28:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:11,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:11,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061264676] [2020-08-21 17:28:11,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:11,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:28:11,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799273101] [2020-08-21 17:28:11,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:28:11,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:11,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:28:11,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:28:11,227 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 5 states. [2020-08-21 17:28:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:11,823 INFO L93 Difference]: Finished difference Result 143 states and 221 transitions. [2020-08-21 17:28:11,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:28:11,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-21 17:28:11,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:11,842 INFO L225 Difference]: With dead ends: 143 [2020-08-21 17:28:11,842 INFO L226 Difference]: Without dead ends: 123 [2020-08-21 17:28:11,846 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 [2020-08-21 17:28:11,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-21 17:28:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 118. [2020-08-21 17:28:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 17:28:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2020-08-21 17:28:11,903 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 11 [2020-08-21 17:28:11,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:11,904 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2020-08-21 17:28:11,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:28:11,904 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2020-08-21 17:28:11,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 17:28:11,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:11,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:11,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:28:11,906 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]=== [2020-08-21 17:28:11,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:11,907 INFO L82 PathProgramCache]: Analyzing trace with hash 601163, now seen corresponding path program 1 times [2020-08-21 17:28:11,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:11,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641109698] [2020-08-21 17:28:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:12,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641109698] [2020-08-21 17:28:12,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:12,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:28:12,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372690830] [2020-08-21 17:28:12,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:28:12,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:12,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:28:12,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:28:12,036 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand 5 states. [2020-08-21 17:28:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:12,461 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2020-08-21 17:28:12,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:28:12,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-21 17:28:12,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:12,469 INFO L225 Difference]: With dead ends: 121 [2020-08-21 17:28:12,469 INFO L226 Difference]: Without dead ends: 113 [2020-08-21 17:28:12,471 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 [2020-08-21 17:28:12,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-21 17:28:12,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-08-21 17:28:12,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-21 17:28:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2020-08-21 17:28:12,496 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 12 [2020-08-21 17:28:12,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:12,496 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2020-08-21 17:28:12,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:28:12,497 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2020-08-21 17:28:12,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 17:28:12,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:12,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:12,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:28:12,499 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]=== [2020-08-21 17:28:12,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:12,500 INFO L82 PathProgramCache]: Analyzing trace with hash -438066310, now seen corresponding path program 1 times [2020-08-21 17:28:12,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:12,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194162870] [2020-08-21 17:28:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:12,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:12,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194162870] [2020-08-21 17:28:12,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:12,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:28:12,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285118612] [2020-08-21 17:28:12,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:28:12,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:12,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:28:12,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:12,588 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand 6 states. [2020-08-21 17:28:12,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:12,949 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2020-08-21 17:28:12,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:28:12,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-21 17:28:12,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:12,953 INFO L225 Difference]: With dead ends: 113 [2020-08-21 17:28:12,953 INFO L226 Difference]: Without dead ends: 111 [2020-08-21 17:28:12,956 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 [2020-08-21 17:28:12,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-21 17:28:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-08-21 17:28:12,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-21 17:28:12,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2020-08-21 17:28:12,974 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 15 [2020-08-21 17:28:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:12,975 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2020-08-21 17:28:12,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:28:12,975 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2020-08-21 17:28:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 17:28:12,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:12,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:12,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:28:12,977 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]=== [2020-08-21 17:28:12,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:12,977 INFO L82 PathProgramCache]: Analyzing trace with hash -695150622, now seen corresponding path program 1 times [2020-08-21 17:28:12,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:12,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630756095] [2020-08-21 17:28:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:13,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:13,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630756095] [2020-08-21 17:28:13,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:13,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:28:13,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150829888] [2020-08-21 17:28:13,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:28:13,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:13,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:28:13,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:28:13,054 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 5 states. [2020-08-21 17:28:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:13,334 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-08-21 17:28:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 17:28:13,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-21 17:28:13,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:13,337 INFO L225 Difference]: With dead ends: 111 [2020-08-21 17:28:13,337 INFO L226 Difference]: Without dead ends: 107 [2020-08-21 17:28:13,339 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 [2020-08-21 17:28:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-08-21 17:28:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-08-21 17:28:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-21 17:28:13,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2020-08-21 17:28:13,348 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 16 [2020-08-21 17:28:13,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:13,348 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2020-08-21 17:28:13,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:28:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2020-08-21 17:28:13,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 17:28:13,349 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:13,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:13,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:28:13,350 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]=== [2020-08-21 17:28:13,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:13,351 INFO L82 PathProgramCache]: Analyzing trace with hash -61564757, now seen corresponding path program 1 times [2020-08-21 17:28:13,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:13,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539610968] [2020-08-21 17:28:13,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:13,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:13,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539610968] [2020-08-21 17:28:13,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:13,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:28:13,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115820334] [2020-08-21 17:28:13,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:28:13,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:13,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:28:13,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:13,450 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand 6 states. [2020-08-21 17:28:13,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:13,822 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2020-08-21 17:28:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:28:13,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 17:28:13,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:13,825 INFO L225 Difference]: With dead ends: 125 [2020-08-21 17:28:13,825 INFO L226 Difference]: Without dead ends: 123 [2020-08-21 17:28:13,826 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 [2020-08-21 17:28:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-21 17:28:13,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2020-08-21 17:28:13,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 17:28:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2020-08-21 17:28:13,834 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 17 [2020-08-21 17:28:13,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:13,834 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2020-08-21 17:28:13,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:28:13,835 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2020-08-21 17:28:13,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 17:28:13,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:13,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:13,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:28:13,836 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]=== [2020-08-21 17:28:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:13,837 INFO L82 PathProgramCache]: Analyzing trace with hash -60025557, now seen corresponding path program 1 times [2020-08-21 17:28:13,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:13,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942780798] [2020-08-21 17:28:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:13,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:13,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942780798] [2020-08-21 17:28:13,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:13,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:28:13,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309087582] [2020-08-21 17:28:13,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:28:13,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:13,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:28:13,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:13,903 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand 6 states. [2020-08-21 17:28:14,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:14,191 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-08-21 17:28:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:28:14,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 17:28:14,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:14,192 INFO L225 Difference]: With dead ends: 105 [2020-08-21 17:28:14,192 INFO L226 Difference]: Without dead ends: 103 [2020-08-21 17:28:14,193 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 [2020-08-21 17:28:14,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-08-21 17:28:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-08-21 17:28:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-08-21 17:28:14,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2020-08-21 17:28:14,201 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2020-08-21 17:28:14,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:14,201 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2020-08-21 17:28:14,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:28:14,201 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2020-08-21 17:28:14,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 17:28:14,202 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:14,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:14,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 17:28:14,203 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]=== [2020-08-21 17:28:14,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:14,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1907138927, now seen corresponding path program 1 times [2020-08-21 17:28:14,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:14,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340671214] [2020-08-21 17:28:14,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:14,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:14,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340671214] [2020-08-21 17:28:14,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:14,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:28:14,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597809058] [2020-08-21 17:28:14,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:28:14,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:14,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:28:14,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:14,304 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand 6 states. [2020-08-21 17:28:14,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:14,612 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-08-21 17:28:14,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 17:28:14,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 17:28:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:14,615 INFO L225 Difference]: With dead ends: 124 [2020-08-21 17:28:14,615 INFO L226 Difference]: Without dead ends: 122 [2020-08-21 17:28:14,616 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 [2020-08-21 17:28:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-21 17:28:14,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2020-08-21 17:28:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-21 17:28:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-08-21 17:28:14,623 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 18 [2020-08-21 17:28:14,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:14,623 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-08-21 17:28:14,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:28:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-08-21 17:28:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 17:28:14,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:14,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:14,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 17:28:14,625 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]=== [2020-08-21 17:28:14,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:14,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1908504347, now seen corresponding path program 1 times [2020-08-21 17:28:14,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:14,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920022146] [2020-08-21 17:28:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:14,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920022146] [2020-08-21 17:28:14,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:14,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:28:14,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851939390] [2020-08-21 17:28:14,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:28:14,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:14,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:28:14,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:14,702 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 6 states. [2020-08-21 17:28:15,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:15,014 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-08-21 17:28:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:28:15,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 17:28:15,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:15,016 INFO L225 Difference]: With dead ends: 116 [2020-08-21 17:28:15,017 INFO L226 Difference]: Without dead ends: 114 [2020-08-21 17:28:15,017 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 [2020-08-21 17:28:15,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-21 17:28:15,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2020-08-21 17:28:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-21 17:28:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-08-21 17:28:15,024 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 18 [2020-08-21 17:28:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:15,024 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-08-21 17:28:15,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:28:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-08-21 17:28:15,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 17:28:15,025 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:15,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:15,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 17:28:15,026 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]=== [2020-08-21 17:28:15,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:15,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1860789097, now seen corresponding path program 1 times [2020-08-21 17:28:15,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:15,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670992606] [2020-08-21 17:28:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:15,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:15,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670992606] [2020-08-21 17:28:15,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:15,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:28:15,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690580033] [2020-08-21 17:28:15,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:28:15,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:15,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:28:15,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:15,089 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-08-21 17:28:15,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:15,428 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2020-08-21 17:28:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:28:15,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 17:28:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:15,430 INFO L225 Difference]: With dead ends: 99 [2020-08-21 17:28:15,430 INFO L226 Difference]: Without dead ends: 95 [2020-08-21 17:28:15,430 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 [2020-08-21 17:28:15,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-21 17:28:15,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-08-21 17:28:15,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-21 17:28:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-08-21 17:28:15,442 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 18 [2020-08-21 17:28:15,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:15,443 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-08-21 17:28:15,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:28:15,443 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-08-21 17:28:15,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 17:28:15,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:15,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:28:15,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 17:28:15,445 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]=== [2020-08-21 17:28:15,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:15,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1008238558, now seen corresponding path program 1 times [2020-08-21 17:28:15,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:15,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500822021] [2020-08-21 17:28:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:15,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:15,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500822021] [2020-08-21 17:28:15,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:15,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:28:15,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918735876] [2020-08-21 17:28:15,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:28:15,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:15,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:28:15,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:15,511 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 6 states. [2020-08-21 17:28:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:15,825 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2020-08-21 17:28:15,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:28:15,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-21 17:28:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:15,826 INFO L225 Difference]: With dead ends: 111 [2020-08-21 17:28:15,826 INFO L226 Difference]: Without dead ends: 109 [2020-08-21 17:28:15,828 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 [2020-08-21 17:28:15,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-21 17:28:15,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2020-08-21 17:28:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-21 17:28:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-08-21 17:28:15,835 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 19 [2020-08-21 17:28:15,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:15,835 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-08-21 17:28:15,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:28:15,836 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-08-21 17:28:15,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 17:28:15,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:15,839 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] [2020-08-21 17:28:15,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 17:28:15,840 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]=== [2020-08-21 17:28:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:15,840 INFO L82 PathProgramCache]: Analyzing trace with hash -121545016, now seen corresponding path program 1 times [2020-08-21 17:28:15,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:15,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754572602] [2020-08-21 17:28:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:15,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:15,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754572602] [2020-08-21 17:28:15,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:15,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:28:15,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886968673] [2020-08-21 17:28:15,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:28:15,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:15,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:28:15,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:28:15,909 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 5 states. [2020-08-21 17:28:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:16,086 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-08-21 17:28:16,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 17:28:16,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-21 17:28:16,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:16,087 INFO L225 Difference]: With dead ends: 93 [2020-08-21 17:28:16,088 INFO L226 Difference]: Without dead ends: 91 [2020-08-21 17:28:16,088 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 [2020-08-21 17:28:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-08-21 17:28:16,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-08-21 17:28:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-21 17:28:16,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-08-21 17:28:16,093 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 20 [2020-08-21 17:28:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:16,093 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-08-21 17:28:16,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:28:16,093 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-08-21 17:28:16,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 17:28:16,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:16,094 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] [2020-08-21 17:28:16,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 17:28:16,095 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]=== [2020-08-21 17:28:16,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:16,095 INFO L82 PathProgramCache]: Analyzing trace with hash 527074935, now seen corresponding path program 1 times [2020-08-21 17:28:16,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:16,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43346755] [2020-08-21 17:28:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:16,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:16,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43346755] [2020-08-21 17:28:16,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:16,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:28:16,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147208567] [2020-08-21 17:28:16,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:28:16,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:16,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:28:16,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:28:16,142 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 5 states. [2020-08-21 17:28:16,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:16,371 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2020-08-21 17:28:16,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 17:28:16,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 17:28:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:16,372 INFO L225 Difference]: With dead ends: 91 [2020-08-21 17:28:16,372 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 17:28:16,373 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 [2020-08-21 17:28:16,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 17:28:16,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-08-21 17:28:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-21 17:28:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-08-21 17:28:16,376 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 21 [2020-08-21 17:28:16,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:16,376 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-08-21 17:28:16,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:28:16,377 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-08-21 17:28:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 17:28:16,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:16,378 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] [2020-08-21 17:28:16,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 17:28:16,379 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]=== [2020-08-21 17:28:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:16,379 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833109, now seen corresponding path program 1 times [2020-08-21 17:28:16,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:16,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49789872] [2020-08-21 17:28:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:16,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:16,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49789872] [2020-08-21 17:28:16,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:16,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 17:28:16,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570098131] [2020-08-21 17:28:16,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 17:28:16,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:16,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 17:28:16,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:28:16,633 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 14 states. [2020-08-21 17:28:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:16,983 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-08-21 17:28:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 17:28:16,984 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-08-21 17:28:16,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:16,985 INFO L225 Difference]: With dead ends: 67 [2020-08-21 17:28:16,985 INFO L226 Difference]: Without dead ends: 65 [2020-08-21 17:28:16,986 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 [2020-08-21 17:28:16,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-21 17:28:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2020-08-21 17:28:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-21 17:28:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-08-21 17:28:16,989 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 48 [2020-08-21 17:28:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:16,989 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-08-21 17:28:16,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 17:28:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-08-21 17:28:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 17:28:16,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:16,991 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] [2020-08-21 17:28:16,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 17:28:16,991 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]=== [2020-08-21 17:28:16,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:16,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2058819207, now seen corresponding path program 1 times [2020-08-21 17:28:16,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:16,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010614858] [2020-08-21 17:28:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:17,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010614858] [2020-08-21 17:28:17,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:17,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 17:28:17,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703507991] [2020-08-21 17:28:17,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 17:28:17,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:17,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 17:28:17,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-21 17:28:17,163 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 14 states. [2020-08-21 17:28:17,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:17,453 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-08-21 17:28:17,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 17:28:17,453 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-08-21 17:28:17,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:17,454 INFO L225 Difference]: With dead ends: 56 [2020-08-21 17:28:17,454 INFO L226 Difference]: Without dead ends: 54 [2020-08-21 17:28:17,455 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 [2020-08-21 17:28:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-21 17:28:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-21 17:28:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 17:28:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-08-21 17:28:17,458 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 48 [2020-08-21 17:28:17,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:17,459 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-08-21 17:28:17,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 17:28:17,459 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-08-21 17:28:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-21 17:28:17,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:17,459 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] [2020-08-21 17:28:17,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 17:28:17,460 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]=== [2020-08-21 17:28:17,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:17,460 INFO L82 PathProgramCache]: Analyzing trace with hash -600679635, now seen corresponding path program 1 times [2020-08-21 17:28:17,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:17,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391677404] [2020-08-21 17:28:17,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:17,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:17,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391677404] [2020-08-21 17:28:17,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:17,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:28:17,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938825926] [2020-08-21 17:28:17,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:28:17,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:17,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:28:17,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:17,650 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 6 states. [2020-08-21 17:28:17,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:17,832 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-08-21 17:28:17,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:28:17,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-08-21 17:28:17,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:17,834 INFO L225 Difference]: With dead ends: 62 [2020-08-21 17:28:17,834 INFO L226 Difference]: Without dead ends: 60 [2020-08-21 17:28:17,835 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 [2020-08-21 17:28:17,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-21 17:28:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-08-21 17:28:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 17:28:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-08-21 17:28:17,838 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2020-08-21 17:28:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:17,838 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-08-21 17:28:17,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:28:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-08-21 17:28:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-21 17:28:17,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:28:17,839 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] [2020-08-21 17:28:17,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 17:28:17,839 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]=== [2020-08-21 17:28:17,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:28:17,840 INFO L82 PathProgramCache]: Analyzing trace with hash -601110611, now seen corresponding path program 1 times [2020-08-21 17:28:17,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:28:17,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909285879] [2020-08-21 17:28:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:28:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:18,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:28:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:28:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:28:18,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909285879] [2020-08-21 17:28:18,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:28:18,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 17:28:18,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299482562] [2020-08-21 17:28:18,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 17:28:18,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:28:18,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 17:28:18,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:28:18,012 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 6 states. [2020-08-21 17:28:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:28:18,142 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-08-21 17:28:18,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 17:28:18,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-08-21 17:28:18,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:28:18,143 INFO L225 Difference]: With dead ends: 52 [2020-08-21 17:28:18,143 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 17:28:18,144 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 [2020-08-21 17:28:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 17:28:18,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 17:28:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 17:28:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 17:28:18,145 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-08-21 17:28:18,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:28:18,145 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 17:28:18,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 17:28:18,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 17:28:18,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 17:28:18,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 17:28:18,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 17:28:18,277 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:28:18,277 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)|)) [2020-08-21 17:28:18,277 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:28:18,277 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 17:28:18,277 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 17:28:18,278 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 17:28:18,278 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 17:28:18,278 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-21 17:28:18,278 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-21 17:28:18,278 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-21 17:28:18,278 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-21 17:28:18,278 INFO L268 CegarLoopResult]: For program point L927(lines 927 939) no Hoare annotation was computed. [2020-08-21 17:28:18,278 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2020-08-21 17:28:18,279 INFO L268 CegarLoopResult]: For program point L217(line 217) no Hoare annotation was computed. [2020-08-21 17:28:18,279 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 15 1004) no Hoare annotation was computed. [2020-08-21 17:28:18,279 INFO L268 CegarLoopResult]: For program point L663(lines 663 961) no Hoare annotation was computed. [2020-08-21 17:28:18,279 INFO L268 CegarLoopResult]: For program point L432(lines 432 983) no Hoare annotation was computed. [2020-08-21 17:28:18,279 INFO L268 CegarLoopResult]: For program point L267(line 267) no Hoare annotation was computed. [2020-08-21 17:28:18,279 INFO L268 CegarLoopResult]: For program point L647(lines 647 963) no Hoare annotation was computed. [2020-08-21 17:28:18,279 INFO L268 CegarLoopResult]: For program point L383(lines 383 986) no Hoare annotation was computed. [2020-08-21 17:28:18,279 INFO L268 CegarLoopResult]: For program point L20(lines 20 1003) no Hoare annotation was computed. [2020-08-21 17:28:18,279 INFO L268 CegarLoopResult]: For program point L466(lines 466 490) no Hoare annotation was computed. [2020-08-21 17:28:18,280 INFO L268 CegarLoopResult]: For program point L879(lines 879 905) no Hoare annotation was computed. [2020-08-21 17:28:18,280 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 917) no Hoare annotation was computed. [2020-08-21 17:28:18,280 INFO L268 CegarLoopResult]: For program point L169(lines 169 191) no Hoare annotation was computed. [2020-08-21 17:28:18,280 INFO L268 CegarLoopResult]: For program point L681(lines 681 692) no Hoare annotation was computed. [2020-08-21 17:28:18,280 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-08-21 17:28:18,280 INFO L268 CegarLoopResult]: For program point L70(lines 70 286) no Hoare annotation was computed. [2020-08-21 17:28:18,280 INFO L268 CegarLoopResult]: For program point L929(line 929) no Hoare annotation was computed. [2020-08-21 17:28:18,280 INFO L268 CegarLoopResult]: For program point L731(lines 731 955) no Hoare annotation was computed. [2020-08-21 17:28:18,280 INFO L268 CegarLoopResult]: For program point L153(lines 153 232) no Hoare annotation was computed. [2020-08-21 17:28:18,281 INFO L268 CegarLoopResult]: For program point L500(lines 500 977) no Hoare annotation was computed. [2020-08-21 17:28:18,281 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 15 1004) no Hoare annotation was computed. [2020-08-21 17:28:18,281 INFO L268 CegarLoopResult]: For program point L203(lines 203 229) no Hoare annotation was computed. [2020-08-21 17:28:18,281 INFO L268 CegarLoopResult]: For program point L715(lines 715 957) no Hoare annotation was computed. [2020-08-21 17:28:18,281 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 893) no Hoare annotation was computed. [2020-08-21 17:28:18,281 INFO L268 CegarLoopResult]: For program point L451(lines 451 980) no Hoare annotation was computed. [2020-08-21 17:28:18,281 INFO L268 CegarLoopResult]: For program point L864(lines 864 944) no Hoare annotation was computed. [2020-08-21 17:28:18,281 INFO L268 CegarLoopResult]: For program point L253(lines 253 275) no Hoare annotation was computed. [2020-08-21 17:28:18,281 INFO L268 CegarLoopResult]: For program point L534(lines 534 558) no Hoare annotation was computed. [2020-08-21 17:28:18,282 INFO L268 CegarLoopResult]: For program point L881(line 881) no Hoare annotation was computed. [2020-08-21 17:28:18,282 INFO L268 CegarLoopResult]: For program point L749(lines 749 760) no Hoare annotation was computed. [2020-08-21 17:28:18,282 INFO L268 CegarLoopResult]: For program point L171(line 171) no Hoare annotation was computed. [2020-08-21 17:28:18,282 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 205) no Hoare annotation was computed. [2020-08-21 17:28:18,282 INFO L268 CegarLoopResult]: For program point L799(lines 799 949) no Hoare annotation was computed. [2020-08-21 17:28:18,282 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-08-21 17:28:18,282 INFO L268 CegarLoopResult]: For program point L568(lines 568 971) no Hoare annotation was computed. [2020-08-21 17:28:18,283 INFO L268 CegarLoopResult]: For program point L915(lines 915 941) no Hoare annotation was computed. [2020-08-21 17:28:18,283 INFO L268 CegarLoopResult]: For program point L783(lines 783 951) no Hoare annotation was computed. [2020-08-21 17:28:18,283 INFO L268 CegarLoopResult]: For program point L205(line 205) no Hoare annotation was computed. [2020-08-21 17:28:18,283 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 929) no Hoare annotation was computed. [2020-08-21 17:28:18,283 INFO L268 CegarLoopResult]: For program point L519(lines 519 974) no Hoare annotation was computed. [2020-08-21 17:28:18,283 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)) [2020-08-21 17:28:18,283 INFO L268 CegarLoopResult]: For program point L255(line 255) no Hoare annotation was computed. [2020-08-21 17:28:18,283 INFO L268 CegarLoopResult]: For program point L602(lines 602 626) no Hoare annotation was computed. [2020-08-21 17:28:18,284 INFO L268 CegarLoopResult]: For program point L24(lines 24 998) no Hoare annotation was computed. [2020-08-21 17:28:18,284 INFO L268 CegarLoopResult]: For program point L817(lines 817 828) no Hoare annotation was computed. [2020-08-21 17:28:18,284 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2020-08-21 17:28:18,284 INFO L268 CegarLoopResult]: For program point L636(lines 636 965) no Hoare annotation was computed. [2020-08-21 17:28:18,284 INFO L268 CegarLoopResult]: For program point L917(line 917) no Hoare annotation was computed. [2020-08-21 17:28:18,284 INFO L268 CegarLoopResult]: For program point L851(lines 851 945) no Hoare annotation was computed. [2020-08-21 17:28:18,284 INFO L268 CegarLoopResult]: For program point L141(lines 141 234) no Hoare annotation was computed. [2020-08-21 17:28:18,284 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2020-08-21 17:28:18,285 INFO L268 CegarLoopResult]: For program point L587(lines 587 968) no Hoare annotation was computed. [2020-08-21 17:28:18,285 INFO L268 CegarLoopResult]: For program point L323(lines 323 991) no Hoare annotation was computed. [2020-08-21 17:28:18,285 INFO L268 CegarLoopResult]: For program point L670(lines 670 694) no Hoare annotation was computed. [2020-08-21 17:28:18,285 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-08-21 17:28:18,285 INFO L268 CegarLoopResult]: For program point L307(lines 307 993) no Hoare annotation was computed. [2020-08-21 17:28:18,285 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)) [2020-08-21 17:28:18,285 INFO L268 CegarLoopResult]: For program point L704(lines 704 959) no Hoare annotation was computed. [2020-08-21 17:28:18,285 INFO L268 CegarLoopResult]: For program point L341(lines 341 352) no Hoare annotation was computed. [2020-08-21 17:28:18,286 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-08-21 17:28:18,286 INFO L268 CegarLoopResult]: For program point L655(lines 655 962) no Hoare annotation was computed. [2020-08-21 17:28:18,286 INFO L268 CegarLoopResult]: For program point L44(lines 44 54) no Hoare annotation was computed. [2020-08-21 17:28:18,286 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 267) no Hoare annotation was computed. [2020-08-21 17:28:18,286 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)) [2020-08-21 17:28:18,286 INFO L268 CegarLoopResult]: For program point L391(lines 391 985) no Hoare annotation was computed. [2020-08-21 17:28:18,286 INFO L268 CegarLoopResult]: For program point L738(lines 738 762) no Hoare annotation was computed. [2020-08-21 17:28:18,287 INFO L268 CegarLoopResult]: For program point L94(lines 94 283) no Hoare annotation was computed. [2020-08-21 17:28:18,287 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 171) no Hoare annotation was computed. [2020-08-21 17:28:18,287 INFO L268 CegarLoopResult]: For program point L375(lines 375 987) no Hoare annotation was computed. [2020-08-21 17:28:18,287 INFO L268 CegarLoopResult]: For program point L772(lines 772 953) no Hoare annotation was computed. [2020-08-21 17:28:18,287 INFO L268 CegarLoopResult]: For program point L409(lines 409 420) no Hoare annotation was computed. [2020-08-21 17:28:18,287 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-08-21 17:28:18,287 INFO L268 CegarLoopResult]: For program point L723(lines 723 956) no Hoare annotation was computed. [2020-08-21 17:28:18,287 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-08-21 17:28:18,287 INFO L268 CegarLoopResult]: For program point L459(lines 459 979) no Hoare annotation was computed. [2020-08-21 17:28:18,288 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)) [2020-08-21 17:28:18,288 INFO L268 CegarLoopResult]: For program point L872(lines 872 943) no Hoare annotation was computed. [2020-08-21 17:28:18,288 INFO L268 CegarLoopResult]: For program point L806(lines 806 830) no Hoare annotation was computed. [2020-08-21 17:28:18,288 INFO L268 CegarLoopResult]: For program point L162(lines 162 231) no Hoare annotation was computed. [2020-08-21 17:28:18,288 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-08-21 17:28:18,288 INFO L268 CegarLoopResult]: For program point L63(lines 63 997) no Hoare annotation was computed. [2020-08-21 17:28:18,288 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)|)) [2020-08-21 17:28:18,289 INFO L268 CegarLoopResult]: For program point L443(lines 443 981) no Hoare annotation was computed. [2020-08-21 17:28:18,289 INFO L268 CegarLoopResult]: For program point L113(lines 113 121) no Hoare annotation was computed. [2020-08-21 17:28:18,289 INFO L268 CegarLoopResult]: For program point L840(lines 840 947) no Hoare annotation was computed. [2020-08-21 17:28:18,289 INFO L268 CegarLoopResult]: For program point L130(lines 130 282) no Hoare annotation was computed. [2020-08-21 17:28:18,289 INFO L268 CegarLoopResult]: For program point L477(lines 477 488) no Hoare annotation was computed. [2020-08-21 17:28:18,289 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 183) no Hoare annotation was computed. [2020-08-21 17:28:18,289 INFO L268 CegarLoopResult]: For program point L791(lines 791 950) no Hoare annotation was computed. [2020-08-21 17:28:18,289 INFO L268 CegarLoopResult]: For program point L246(lines 246 281) no Hoare annotation was computed. [2020-08-21 17:28:18,289 INFO L268 CegarLoopResult]: For program point L81(lines 81 284) no Hoare annotation was computed. [2020-08-21 17:28:18,290 INFO L268 CegarLoopResult]: For program point L527(lines 527 973) no Hoare annotation was computed. [2020-08-21 17:28:18,290 INFO L268 CegarLoopResult]: For program point L296(lines 296 995) no Hoare annotation was computed. [2020-08-21 17:28:18,290 INFO L268 CegarLoopResult]: For program point L32(lines 32 56) no Hoare annotation was computed. [2020-08-21 17:28:18,290 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2020-08-21 17:28:18,290 INFO L268 CegarLoopResult]: For program point L511(lines 511 975) no Hoare annotation was computed. [2020-08-21 17:28:18,290 INFO L268 CegarLoopResult]: For program point L891(lines 891 903) no Hoare annotation was computed. [2020-08-21 17:28:18,290 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)) [2020-08-21 17:28:18,290 INFO L268 CegarLoopResult]: For program point L181(lines 181 189) no Hoare annotation was computed. [2020-08-21 17:28:18,290 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-08-21 17:28:18,291 INFO L268 CegarLoopResult]: For program point L330(lines 330 354) no Hoare annotation was computed. [2020-08-21 17:28:18,291 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-08-21 17:28:18,291 INFO L268 CegarLoopResult]: For program point L545(lines 545 556) no Hoare annotation was computed. [2020-08-21 17:28:18,291 INFO L268 CegarLoopResult]: For program point L215(lines 215 227) no Hoare annotation was computed. [2020-08-21 17:28:18,291 INFO L268 CegarLoopResult]: For program point L595(lines 595 967) no Hoare annotation was computed. [2020-08-21 17:28:18,291 INFO L268 CegarLoopResult]: For program point L364(lines 364 989) no Hoare annotation was computed. [2020-08-21 17:28:18,291 INFO L268 CegarLoopResult]: For program point L265(lines 265 273) no Hoare annotation was computed. [2020-08-21 17:28:18,291 INFO L268 CegarLoopResult]: For program point L579(lines 579 969) no Hoare annotation was computed. [2020-08-21 17:28:18,291 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-08-21 17:28:18,291 INFO L268 CegarLoopResult]: For program point L893(line 893) no Hoare annotation was computed. [2020-08-21 17:28:18,292 INFO L268 CegarLoopResult]: For program point L315(lines 315 992) no Hoare annotation was computed. [2020-08-21 17:28:18,292 INFO L268 CegarLoopResult]: For program point L183(line 183) no Hoare annotation was computed. [2020-08-21 17:28:18,292 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 881) no Hoare annotation was computed. [2020-08-21 17:28:18,292 INFO L268 CegarLoopResult]: For program point L398(lines 398 422) no Hoare annotation was computed. [2020-08-21 17:28:18,292 INFO L268 CegarLoopResult]: For program point L134(lines 134 240) no Hoare annotation was computed. [2020-08-21 17:28:18,292 INFO L268 CegarLoopResult]: For program point L101(lines 101 123) no Hoare annotation was computed. [2020-08-21 17:28:18,292 INFO L268 CegarLoopResult]: For program point L613(lines 613 624) no Hoare annotation was computed. [2020-08-21 17:28:18,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:28:18 BoogieIcfgContainer [2020-08-21 17:28:18,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:28:18,317 INFO L168 Benchmark]: Toolchain (without parser) took 8927.62 ms. Allocated memory was 140.0 MB in the beginning and 311.4 MB in the end (delta: 171.4 MB). Free memory was 102.5 MB in the beginning and 175.9 MB in the end (delta: -73.4 MB). Peak memory consumption was 98.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:18,317 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 17:28:18,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.54 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 83.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:18,319 INFO L168 Benchmark]: Boogie Preprocessor took 150.20 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 83.1 MB in the beginning and 178.5 MB in the end (delta: -95.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:18,320 INFO L168 Benchmark]: RCFGBuilder took 834.29 ms. Allocated memory is still 202.9 MB. Free memory was 178.5 MB in the beginning and 128.6 MB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:18,320 INFO L168 Benchmark]: TraceAbstraction took 7472.44 ms. Allocated memory was 202.9 MB in the beginning and 311.4 MB in the end (delta: 108.5 MB). Free memory was 127.9 MB in the beginning and 175.9 MB in the end (delta: -48.0 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-08-21 17:28:18,324 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 465.54 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 83.1 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.20 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 83.1 MB in the beginning and 178.5 MB in the end (delta: -95.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 834.29 ms. Allocated memory is still 202.9 MB. Free memory was 178.5 MB in the beginning and 128.6 MB in the end (delta: 49.9 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7472.44 ms. Allocated memory was 202.9 MB in the beginning and 311.4 MB in the end (delta: 108.5 MB). Free memory was 127.9 MB in the beginning and 175.9 MB in the end (delta: -48.0 MB). Peak memory consumption was 60.5 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: 7.2s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 5.0s, 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, 1.5s 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, 1.4s 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...