/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=HIGHLEXORDER --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 19:04:45,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:04:45,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:04:45,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:04:45,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:04:45,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:04:45,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:04:45,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:04:45,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:04:45,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:04:45,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:04:45,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:04:45,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:04:45,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:04:45,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:04:45,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:04:45,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:04:45,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:04:45,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:04:45,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:04:45,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:04:45,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:04:45,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:04:45,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:04:45,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:04:45,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:04:45,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:04:45,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:04:45,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:04:45,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:04:45,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:04:45,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:04:45,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:04:45,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:04:45,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:04:45,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:04:45,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:04:45,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:04:45,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:04:45,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:04:45,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:04:45,166 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 19:04:45,207 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:04:45,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:04:45,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:04:45,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:04:45,210 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:04:45,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:04:45,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:04:45,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:04:45,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:04:45,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:04:45,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:04:45,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:04:45,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:04:45,213 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:04:45,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:04:45,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:04:45,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:04:45,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:04:45,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:04:45,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:04:45,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:04:45,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:04:45,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:04:45,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:04:45,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:04:45,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:04:45,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:04:45,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:04:45,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:04:45,217 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=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 19:04:45,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:04:45,556 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:04:45,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:04:45,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:04:45,562 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:04:45,562 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-08-21 19:04:45,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d2d80230/d4208e75c6fb45f1b9105c2295a53d4e/FLAG9aa386110 [2020-08-21 19:04:46,148 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:04:46,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-08-21 19:04:46,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d2d80230/d4208e75c6fb45f1b9105c2295a53d4e/FLAG9aa386110 [2020-08-21 19:04:46,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d2d80230/d4208e75c6fb45f1b9105c2295a53d4e [2020-08-21 19:04:46,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:04:46,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:04:46,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:04:46,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:04:46,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:04:46,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:04:46" (1/1) ... [2020-08-21 19:04:46,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c4c539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:46, skipping insertion in model container [2020-08-21 19:04:46,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:04:46" (1/1) ... [2020-08-21 19:04:46,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:04:46,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:04:46,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:04:46,924 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:04:47,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:04:47,135 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:04:47,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47 WrapperNode [2020-08-21 19:04:47,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:04:47,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:04:47,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:04:47,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:04:47,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (1/1) ... [2020-08-21 19:04:47,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:04:47,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:04:47,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:04:47,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:04:47,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (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 19:04:47,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:04:47,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:04:47,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 19:04:47,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:04:47,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:04:47,273 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 19:04:47,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 19:04:47,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 19:04:47,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:04:47,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:04:47,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:04:47,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:04:47,948 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:04:47,949 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 19:04:47,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:04:47 BoogieIcfgContainer [2020-08-21 19:04:47,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:04:47,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:04:47,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:04:47,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:04:47,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:04:46" (1/3) ... [2020-08-21 19:04:47,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48483ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:04:47, skipping insertion in model container [2020-08-21 19:04:47,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:04:47" (2/3) ... [2020-08-21 19:04:47,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48483ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:04:47, skipping insertion in model container [2020-08-21 19:04:47,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:04:47" (3/3) ... [2020-08-21 19:04:47,963 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-08-21 19:04:47,974 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:04:47,982 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-08-21 19:04:47,997 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-08-21 19:04:48,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:04:48,023 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:04:48,023 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:04:48,023 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:04:48,024 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:04:48,024 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:04:48,024 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:04:48,024 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:04:48,048 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2020-08-21 19:04:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 19:04:48,054 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:48,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:48,056 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 19:04:48,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:48,061 INFO L82 PathProgramCache]: Analyzing trace with hash 692755954, now seen corresponding path program 1 times [2020-08-21 19:04:48,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:48,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748542742] [2020-08-21 19:04:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:48,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:48,289 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 19:04:48,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748542742] [2020-08-21 19:04:48,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:48,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:04:48,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791939537] [2020-08-21 19:04:48,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:04:48,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:48,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:04:48,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:04:48,319 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 5 states. [2020-08-21 19:04:48,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:48,938 INFO L93 Difference]: Finished difference Result 143 states and 221 transitions. [2020-08-21 19:04:48,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:48,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-21 19:04:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:48,952 INFO L225 Difference]: With dead ends: 143 [2020-08-21 19:04:48,953 INFO L226 Difference]: Without dead ends: 123 [2020-08-21 19:04:48,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 19:04:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-21 19:04:49,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 118. [2020-08-21 19:04:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 19:04:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2020-08-21 19:04:49,014 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 11 [2020-08-21 19:04:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:49,015 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2020-08-21 19:04:49,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:04:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2020-08-21 19:04:49,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 19:04:49,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:49,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:49,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:04:49,018 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 19:04:49,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:49,018 INFO L82 PathProgramCache]: Analyzing trace with hash 601163, now seen corresponding path program 1 times [2020-08-21 19:04:49,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:49,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772643960] [2020-08-21 19:04:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:49,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:49,104 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 19:04:49,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772643960] [2020-08-21 19:04:49,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:49,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:04:49,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362665258] [2020-08-21 19:04:49,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:04:49,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:49,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:04:49,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:04:49,108 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand 5 states. [2020-08-21 19:04:49,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:49,465 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2020-08-21 19:04:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:49,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-21 19:04:49,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:49,468 INFO L225 Difference]: With dead ends: 121 [2020-08-21 19:04:49,468 INFO L226 Difference]: Without dead ends: 113 [2020-08-21 19:04:49,470 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 19:04:49,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-21 19:04:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-08-21 19:04:49,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-21 19:04:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2020-08-21 19:04:49,484 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 12 [2020-08-21 19:04:49,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:49,484 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2020-08-21 19:04:49,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:04:49,485 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2020-08-21 19:04:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 19:04:49,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:49,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:49,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:04:49,487 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 19:04:49,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:49,487 INFO L82 PathProgramCache]: Analyzing trace with hash -438066310, now seen corresponding path program 1 times [2020-08-21 19:04:49,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:49,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675943220] [2020-08-21 19:04:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:49,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:49,588 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 19:04:49,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675943220] [2020-08-21 19:04:49,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:49,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:49,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180631019] [2020-08-21 19:04:49,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:49,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:49,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:49,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:49,590 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand 6 states. [2020-08-21 19:04:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:49,917 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2020-08-21 19:04:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:49,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-21 19:04:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:49,919 INFO L225 Difference]: With dead ends: 113 [2020-08-21 19:04:49,920 INFO L226 Difference]: Without dead ends: 111 [2020-08-21 19:04:49,920 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 19:04:49,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-21 19:04:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-08-21 19:04:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-21 19:04:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2020-08-21 19:04:49,930 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 15 [2020-08-21 19:04:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:49,930 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2020-08-21 19:04:49,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2020-08-21 19:04:49,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 19:04:49,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:49,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:04:49,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:04:49,932 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 19:04:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:49,933 INFO L82 PathProgramCache]: Analyzing trace with hash -695150622, now seen corresponding path program 1 times [2020-08-21 19:04:49,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:49,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946732969] [2020-08-21 19:04:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:49,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:49,989 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 19:04:49,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946732969] [2020-08-21 19:04:49,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:49,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:04:49,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993408422] [2020-08-21 19:04:49,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:04:49,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:49,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:04:49,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:04:49,992 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 5 states. [2020-08-21 19:04:50,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:50,284 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-08-21 19:04:50,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:04:50,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-21 19:04:50,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:50,287 INFO L225 Difference]: With dead ends: 111 [2020-08-21 19:04:50,287 INFO L226 Difference]: Without dead ends: 107 [2020-08-21 19:04:50,289 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 19:04:50,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-08-21 19:04:50,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-08-21 19:04:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-21 19:04:50,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2020-08-21 19:04:50,302 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 16 [2020-08-21 19:04:50,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:50,303 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2020-08-21 19:04:50,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:04:50,303 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2020-08-21 19:04:50,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 19:04:50,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:50,309 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 19:04:50,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:04:50,310 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 19:04:50,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:50,311 INFO L82 PathProgramCache]: Analyzing trace with hash -61564757, now seen corresponding path program 1 times [2020-08-21 19:04:50,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:50,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392672536] [2020-08-21 19:04:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:50,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:50,437 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 19:04:50,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392672536] [2020-08-21 19:04:50,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:50,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:50,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850663142] [2020-08-21 19:04:50,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:50,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:50,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:50,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:50,445 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand 6 states. [2020-08-21 19:04:50,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:50,826 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2020-08-21 19:04:50,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:50,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 19:04:50,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:50,828 INFO L225 Difference]: With dead ends: 125 [2020-08-21 19:04:50,828 INFO L226 Difference]: Without dead ends: 123 [2020-08-21 19:04:50,829 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 19:04:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-21 19:04:50,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2020-08-21 19:04:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 19:04:50,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2020-08-21 19:04:50,837 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 17 [2020-08-21 19:04:50,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:50,837 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2020-08-21 19:04:50,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2020-08-21 19:04:50,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 19:04:50,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:50,839 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 19:04:50,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:04:50,839 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 19:04:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:50,840 INFO L82 PathProgramCache]: Analyzing trace with hash -60025557, now seen corresponding path program 1 times [2020-08-21 19:04:50,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:50,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613526840] [2020-08-21 19:04:50,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:50,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:50,915 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 19:04:50,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613526840] [2020-08-21 19:04:50,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:50,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:50,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515686712] [2020-08-21 19:04:50,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:50,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:50,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:50,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:50,917 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand 6 states. [2020-08-21 19:04:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:51,233 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-08-21 19:04:51,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:51,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 19:04:51,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:51,235 INFO L225 Difference]: With dead ends: 105 [2020-08-21 19:04:51,235 INFO L226 Difference]: Without dead ends: 103 [2020-08-21 19:04:51,236 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 19:04:51,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-08-21 19:04:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-08-21 19:04:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-08-21 19:04:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2020-08-21 19:04:51,246 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2020-08-21 19:04:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:51,247 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2020-08-21 19:04:51,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2020-08-21 19:04:51,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 19:04:51,248 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:51,248 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 19:04:51,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:04:51,249 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 19:04:51,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:51,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1907138927, now seen corresponding path program 1 times [2020-08-21 19:04:51,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:51,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040094298] [2020-08-21 19:04:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:51,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:51,306 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 19:04:51,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040094298] [2020-08-21 19:04:51,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:51,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:51,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649960672] [2020-08-21 19:04:51,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:51,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:51,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:51,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:51,309 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand 6 states. [2020-08-21 19:04:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:51,663 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-08-21 19:04:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 19:04:51,664 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 19:04:51,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:51,665 INFO L225 Difference]: With dead ends: 124 [2020-08-21 19:04:51,666 INFO L226 Difference]: Without dead ends: 122 [2020-08-21 19:04:51,666 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 19:04:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-21 19:04:51,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2020-08-21 19:04:51,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-21 19:04:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-08-21 19:04:51,674 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 18 [2020-08-21 19:04:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:51,674 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-08-21 19:04:51,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-08-21 19:04:51,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 19:04:51,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:51,676 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 19:04:51,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:04:51,676 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 19:04:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:51,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1908504347, now seen corresponding path program 1 times [2020-08-21 19:04:51,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:51,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284592413] [2020-08-21 19:04:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:51,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:51,762 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 19:04:51,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284592413] [2020-08-21 19:04:51,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:51,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:51,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109089401] [2020-08-21 19:04:51,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:51,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:51,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:51,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:51,765 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 6 states. [2020-08-21 19:04:52,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:52,132 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-08-21 19:04:52,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:04:52,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 19:04:52,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:52,134 INFO L225 Difference]: With dead ends: 116 [2020-08-21 19:04:52,134 INFO L226 Difference]: Without dead ends: 114 [2020-08-21 19:04:52,135 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 19:04:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-21 19:04:52,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2020-08-21 19:04:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-21 19:04:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-08-21 19:04:52,140 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 18 [2020-08-21 19:04:52,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:52,141 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-08-21 19:04:52,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:52,141 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-08-21 19:04:52,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 19:04:52,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:52,142 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 19:04:52,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:04:52,143 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 19:04:52,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:52,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1860789097, now seen corresponding path program 1 times [2020-08-21 19:04:52,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:52,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974857407] [2020-08-21 19:04:52,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,244 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 19:04:52,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974857407] [2020-08-21 19:04:52,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:52,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:52,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238165557] [2020-08-21 19:04:52,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:52,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:52,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:52,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:52,247 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-08-21 19:04:52,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:52,585 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2020-08-21 19:04:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:04:52,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 19:04:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:52,586 INFO L225 Difference]: With dead ends: 99 [2020-08-21 19:04:52,586 INFO L226 Difference]: Without dead ends: 95 [2020-08-21 19:04:52,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:04:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-21 19:04:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-08-21 19:04:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-21 19:04:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-08-21 19:04:52,596 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 18 [2020-08-21 19:04:52,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:52,597 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-08-21 19:04:52,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:52,597 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-08-21 19:04:52,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 19:04:52,598 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:52,598 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 19:04:52,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:04:52,601 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 19:04:52,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:52,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1008238558, now seen corresponding path program 1 times [2020-08-21 19:04:52,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:52,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15361] [2020-08-21 19:04:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:52,695 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 19:04:52,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15361] [2020-08-21 19:04:52,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:52,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:52,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905731848] [2020-08-21 19:04:52,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:52,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:52,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:52,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:52,697 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 6 states. [2020-08-21 19:04:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:53,052 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2020-08-21 19:04:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:04:53,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-21 19:04:53,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:53,054 INFO L225 Difference]: With dead ends: 111 [2020-08-21 19:04:53,054 INFO L226 Difference]: Without dead ends: 109 [2020-08-21 19:04:53,054 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 19:04:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-21 19:04:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2020-08-21 19:04:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-21 19:04:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-08-21 19:04:53,060 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 19 [2020-08-21 19:04:53,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:53,060 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-08-21 19:04:53,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:53,060 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-08-21 19:04:53,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 19:04:53,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:53,061 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 19:04:53,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:04:53,062 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 19:04:53,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:53,062 INFO L82 PathProgramCache]: Analyzing trace with hash -121545016, now seen corresponding path program 1 times [2020-08-21 19:04:53,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:53,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898785455] [2020-08-21 19:04:53,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:53,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:53,121 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 19:04:53,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898785455] [2020-08-21 19:04:53,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:53,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:04:53,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554188442] [2020-08-21 19:04:53,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:04:53,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:53,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:04:53,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:04:53,124 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 5 states. [2020-08-21 19:04:53,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:53,319 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-08-21 19:04:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:04:53,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-21 19:04:53,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:53,320 INFO L225 Difference]: With dead ends: 93 [2020-08-21 19:04:53,320 INFO L226 Difference]: Without dead ends: 91 [2020-08-21 19:04:53,321 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 19:04:53,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-08-21 19:04:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-08-21 19:04:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-21 19:04:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-08-21 19:04:53,326 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 20 [2020-08-21 19:04:53,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:53,326 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-08-21 19:04:53,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:04:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-08-21 19:04:53,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 19:04:53,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:53,327 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 19:04:53,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 19:04:53,328 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 19:04:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:53,328 INFO L82 PathProgramCache]: Analyzing trace with hash 527074935, now seen corresponding path program 1 times [2020-08-21 19:04:53,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:53,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47943226] [2020-08-21 19:04:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:53,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:53,380 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 19:04:53,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47943226] [2020-08-21 19:04:53,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:53,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:04:53,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061715680] [2020-08-21 19:04:53,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:04:53,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:53,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:04:53,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:04:53,382 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 5 states. [2020-08-21 19:04:53,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:53,586 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2020-08-21 19:04:53,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:04:53,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 19:04:53,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:53,588 INFO L225 Difference]: With dead ends: 91 [2020-08-21 19:04:53,588 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 19:04:53,589 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 19:04:53,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 19:04:53,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-08-21 19:04:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-21 19:04:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-08-21 19:04:53,592 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 21 [2020-08-21 19:04:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:53,593 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-08-21 19:04:53,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:04:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-08-21 19:04:53,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 19:04:53,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:53,595 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 19:04:53,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 19:04:53,595 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 19:04:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:53,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833109, now seen corresponding path program 1 times [2020-08-21 19:04:53,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:53,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40391666] [2020-08-21 19:04:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:53,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:53,805 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 19:04:53,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40391666] [2020-08-21 19:04:53,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:53,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 19:04:53,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083117077] [2020-08-21 19:04:53,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 19:04:53,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:53,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 19:04:53,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:04:53,807 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 14 states. [2020-08-21 19:04:54,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:54,121 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-08-21 19:04:54,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 19:04:54,121 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-08-21 19:04:54,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:54,122 INFO L225 Difference]: With dead ends: 67 [2020-08-21 19:04:54,122 INFO L226 Difference]: Without dead ends: 65 [2020-08-21 19:04:54,125 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 19:04:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-21 19:04:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2020-08-21 19:04:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-21 19:04:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-08-21 19:04:54,128 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 48 [2020-08-21 19:04:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:54,129 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-08-21 19:04:54,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 19:04:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-08-21 19:04:54,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 19:04:54,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:54,134 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 19:04:54,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 19:04:54,134 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 19:04:54,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:54,135 INFO L82 PathProgramCache]: Analyzing trace with hash 2058819207, now seen corresponding path program 1 times [2020-08-21 19:04:54,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:54,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373388326] [2020-08-21 19:04:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:54,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:54,360 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 19:04:54,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373388326] [2020-08-21 19:04:54,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:54,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 19:04:54,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863200897] [2020-08-21 19:04:54,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 19:04:54,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:54,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 19:04:54,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:04:54,363 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 14 states. [2020-08-21 19:04:54,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:54,705 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-08-21 19:04:54,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 19:04:54,706 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-08-21 19:04:54,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:54,707 INFO L225 Difference]: With dead ends: 56 [2020-08-21 19:04:54,707 INFO L226 Difference]: Without dead ends: 54 [2020-08-21 19:04:54,708 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 19:04:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-21 19:04:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-21 19:04:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 19:04:54,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-08-21 19:04:54,711 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 48 [2020-08-21 19:04:54,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:54,711 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-08-21 19:04:54,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 19:04:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-08-21 19:04:54,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-21 19:04:54,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:54,712 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 19:04:54,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 19:04:54,713 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 19:04:54,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:54,713 INFO L82 PathProgramCache]: Analyzing trace with hash -600679635, now seen corresponding path program 1 times [2020-08-21 19:04:54,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:54,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685006211] [2020-08-21 19:04:54,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:54,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:54,911 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 19:04:54,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685006211] [2020-08-21 19:04:54,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:54,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:54,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687857214] [2020-08-21 19:04:54,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:54,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:54,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:54,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:54,914 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 6 states. [2020-08-21 19:04:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:55,132 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-08-21 19:04:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:04:55,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-08-21 19:04:55,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:55,134 INFO L225 Difference]: With dead ends: 62 [2020-08-21 19:04:55,134 INFO L226 Difference]: Without dead ends: 60 [2020-08-21 19:04:55,135 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 19:04:55,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-21 19:04:55,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-08-21 19:04:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 19:04:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-08-21 19:04:55,138 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2020-08-21 19:04:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:55,138 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-08-21 19:04:55,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-08-21 19:04:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-21 19:04:55,139 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:04:55,139 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 19:04:55,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 19:04:55,140 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 19:04:55,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:04:55,140 INFO L82 PathProgramCache]: Analyzing trace with hash -601110611, now seen corresponding path program 1 times [2020-08-21 19:04:55,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:04:55,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596097796] [2020-08-21 19:04:55,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:04:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:55,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:04:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:04:55,333 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 19:04:55,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596097796] [2020-08-21 19:04:55,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:04:55,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:04:55,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505753930] [2020-08-21 19:04:55,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:04:55,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:04:55,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:04:55,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:04:55,339 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 6 states. [2020-08-21 19:04:55,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:04:55,485 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-08-21 19:04:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:04:55,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-08-21 19:04:55,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:04:55,486 INFO L225 Difference]: With dead ends: 52 [2020-08-21 19:04:55,486 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 19:04:55,487 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 19:04:55,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 19:04:55,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 19:04:55,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 19:04:55,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 19:04:55,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-08-21 19:04:55,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:04:55,489 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 19:04:55,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:04:55,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 19:04:55,489 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 19:04:55,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 19:04:55,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 19:04:55,653 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 19:04:55,653 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 19:04:55,654 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:04:55,654 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 19:04:55,654 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 19:04:55,654 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 19:04:55,655 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 19:04:55,655 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-21 19:04:55,655 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-21 19:04:55,655 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-21 19:04:55,655 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-21 19:04:55,656 INFO L268 CegarLoopResult]: For program point L927(lines 927 939) no Hoare annotation was computed. [2020-08-21 19:04:55,656 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2020-08-21 19:04:55,656 INFO L268 CegarLoopResult]: For program point L217(line 217) no Hoare annotation was computed. [2020-08-21 19:04:55,656 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 15 1004) no Hoare annotation was computed. [2020-08-21 19:04:55,657 INFO L268 CegarLoopResult]: For program point L663(lines 663 961) no Hoare annotation was computed. [2020-08-21 19:04:55,657 INFO L268 CegarLoopResult]: For program point L432(lines 432 983) no Hoare annotation was computed. [2020-08-21 19:04:55,657 INFO L268 CegarLoopResult]: For program point L267(line 267) no Hoare annotation was computed. [2020-08-21 19:04:55,657 INFO L268 CegarLoopResult]: For program point L647(lines 647 963) no Hoare annotation was computed. [2020-08-21 19:04:55,657 INFO L268 CegarLoopResult]: For program point L383(lines 383 986) no Hoare annotation was computed. [2020-08-21 19:04:55,658 INFO L268 CegarLoopResult]: For program point L20(lines 20 1003) no Hoare annotation was computed. [2020-08-21 19:04:55,658 INFO L268 CegarLoopResult]: For program point L466(lines 466 490) no Hoare annotation was computed. [2020-08-21 19:04:55,658 INFO L268 CegarLoopResult]: For program point L879(lines 879 905) no Hoare annotation was computed. [2020-08-21 19:04:55,658 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 917) no Hoare annotation was computed. [2020-08-21 19:04:55,658 INFO L268 CegarLoopResult]: For program point L169(lines 169 191) no Hoare annotation was computed. [2020-08-21 19:04:55,659 INFO L268 CegarLoopResult]: For program point L681(lines 681 692) no Hoare annotation was computed. [2020-08-21 19:04:55,659 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-08-21 19:04:55,659 INFO L268 CegarLoopResult]: For program point L70(lines 70 286) no Hoare annotation was computed. [2020-08-21 19:04:55,659 INFO L268 CegarLoopResult]: For program point L929(line 929) no Hoare annotation was computed. [2020-08-21 19:04:55,659 INFO L268 CegarLoopResult]: For program point L731(lines 731 955) no Hoare annotation was computed. [2020-08-21 19:04:55,660 INFO L268 CegarLoopResult]: For program point L153(lines 153 232) no Hoare annotation was computed. [2020-08-21 19:04:55,660 INFO L268 CegarLoopResult]: For program point L500(lines 500 977) no Hoare annotation was computed. [2020-08-21 19:04:55,660 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 15 1004) no Hoare annotation was computed. [2020-08-21 19:04:55,660 INFO L268 CegarLoopResult]: For program point L203(lines 203 229) no Hoare annotation was computed. [2020-08-21 19:04:55,660 INFO L268 CegarLoopResult]: For program point L715(lines 715 957) no Hoare annotation was computed. [2020-08-21 19:04:55,660 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 893) no Hoare annotation was computed. [2020-08-21 19:04:55,660 INFO L268 CegarLoopResult]: For program point L451(lines 451 980) no Hoare annotation was computed. [2020-08-21 19:04:55,661 INFO L268 CegarLoopResult]: For program point L864(lines 864 944) no Hoare annotation was computed. [2020-08-21 19:04:55,661 INFO L268 CegarLoopResult]: For program point L253(lines 253 275) no Hoare annotation was computed. [2020-08-21 19:04:55,661 INFO L268 CegarLoopResult]: For program point L534(lines 534 558) no Hoare annotation was computed. [2020-08-21 19:04:55,661 INFO L268 CegarLoopResult]: For program point L881(line 881) no Hoare annotation was computed. [2020-08-21 19:04:55,661 INFO L268 CegarLoopResult]: For program point L749(lines 749 760) no Hoare annotation was computed. [2020-08-21 19:04:55,662 INFO L268 CegarLoopResult]: For program point L171(line 171) no Hoare annotation was computed. [2020-08-21 19:04:55,662 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 205) no Hoare annotation was computed. [2020-08-21 19:04:55,663 INFO L268 CegarLoopResult]: For program point L799(lines 799 949) no Hoare annotation was computed. [2020-08-21 19:04:55,663 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-08-21 19:04:55,663 INFO L268 CegarLoopResult]: For program point L568(lines 568 971) no Hoare annotation was computed. [2020-08-21 19:04:55,663 INFO L268 CegarLoopResult]: For program point L915(lines 915 941) no Hoare annotation was computed. [2020-08-21 19:04:55,663 INFO L268 CegarLoopResult]: For program point L783(lines 783 951) no Hoare annotation was computed. [2020-08-21 19:04:55,663 INFO L268 CegarLoopResult]: For program point L205(line 205) no Hoare annotation was computed. [2020-08-21 19:04:55,664 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 929) no Hoare annotation was computed. [2020-08-21 19:04:55,664 INFO L268 CegarLoopResult]: For program point L519(lines 519 974) no Hoare annotation was computed. [2020-08-21 19:04:55,664 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 19:04:55,664 INFO L268 CegarLoopResult]: For program point L255(line 255) no Hoare annotation was computed. [2020-08-21 19:04:55,664 INFO L268 CegarLoopResult]: For program point L602(lines 602 626) no Hoare annotation was computed. [2020-08-21 19:04:55,665 INFO L268 CegarLoopResult]: For program point L24(lines 24 998) no Hoare annotation was computed. [2020-08-21 19:04:55,665 INFO L268 CegarLoopResult]: For program point L817(lines 817 828) no Hoare annotation was computed. [2020-08-21 19:04:55,665 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2020-08-21 19:04:55,665 INFO L268 CegarLoopResult]: For program point L636(lines 636 965) no Hoare annotation was computed. [2020-08-21 19:04:55,665 INFO L268 CegarLoopResult]: For program point L917(line 917) no Hoare annotation was computed. [2020-08-21 19:04:55,665 INFO L268 CegarLoopResult]: For program point L851(lines 851 945) no Hoare annotation was computed. [2020-08-21 19:04:55,666 INFO L268 CegarLoopResult]: For program point L141(lines 141 234) no Hoare annotation was computed. [2020-08-21 19:04:55,666 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2020-08-21 19:04:55,666 INFO L268 CegarLoopResult]: For program point L587(lines 587 968) no Hoare annotation was computed. [2020-08-21 19:04:55,666 INFO L268 CegarLoopResult]: For program point L323(lines 323 991) no Hoare annotation was computed. [2020-08-21 19:04:55,666 INFO L268 CegarLoopResult]: For program point L670(lines 670 694) no Hoare annotation was computed. [2020-08-21 19:04:55,666 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-08-21 19:04:55,667 INFO L268 CegarLoopResult]: For program point L307(lines 307 993) no Hoare annotation was computed. [2020-08-21 19:04:55,668 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 19:04:55,668 INFO L268 CegarLoopResult]: For program point L704(lines 704 959) no Hoare annotation was computed. [2020-08-21 19:04:55,669 INFO L268 CegarLoopResult]: For program point L341(lines 341 352) no Hoare annotation was computed. [2020-08-21 19:04:55,670 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-08-21 19:04:55,670 INFO L268 CegarLoopResult]: For program point L655(lines 655 962) no Hoare annotation was computed. [2020-08-21 19:04:55,670 INFO L268 CegarLoopResult]: For program point L44(lines 44 54) no Hoare annotation was computed. [2020-08-21 19:04:55,670 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 267) no Hoare annotation was computed. [2020-08-21 19:04:55,670 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 19:04:55,671 INFO L268 CegarLoopResult]: For program point L391(lines 391 985) no Hoare annotation was computed. [2020-08-21 19:04:55,671 INFO L268 CegarLoopResult]: For program point L738(lines 738 762) no Hoare annotation was computed. [2020-08-21 19:04:55,671 INFO L268 CegarLoopResult]: For program point L94(lines 94 283) no Hoare annotation was computed. [2020-08-21 19:04:55,671 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 171) no Hoare annotation was computed. [2020-08-21 19:04:55,671 INFO L268 CegarLoopResult]: For program point L375(lines 375 987) no Hoare annotation was computed. [2020-08-21 19:04:55,671 INFO L268 CegarLoopResult]: For program point L772(lines 772 953) no Hoare annotation was computed. [2020-08-21 19:04:55,672 INFO L268 CegarLoopResult]: For program point L409(lines 409 420) no Hoare annotation was computed. [2020-08-21 19:04:55,672 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-08-21 19:04:55,672 INFO L268 CegarLoopResult]: For program point L723(lines 723 956) no Hoare annotation was computed. [2020-08-21 19:04:55,672 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-08-21 19:04:55,672 INFO L268 CegarLoopResult]: For program point L459(lines 459 979) no Hoare annotation was computed. [2020-08-21 19:04:55,673 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 19:04:55,673 INFO L268 CegarLoopResult]: For program point L872(lines 872 943) no Hoare annotation was computed. [2020-08-21 19:04:55,673 INFO L268 CegarLoopResult]: For program point L806(lines 806 830) no Hoare annotation was computed. [2020-08-21 19:04:55,673 INFO L268 CegarLoopResult]: For program point L162(lines 162 231) no Hoare annotation was computed. [2020-08-21 19:04:55,673 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-08-21 19:04:55,674 INFO L268 CegarLoopResult]: For program point L63(lines 63 997) no Hoare annotation was computed. [2020-08-21 19:04:55,674 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 19:04:55,674 INFO L268 CegarLoopResult]: For program point L443(lines 443 981) no Hoare annotation was computed. [2020-08-21 19:04:55,674 INFO L268 CegarLoopResult]: For program point L113(lines 113 121) no Hoare annotation was computed. [2020-08-21 19:04:55,674 INFO L268 CegarLoopResult]: For program point L840(lines 840 947) no Hoare annotation was computed. [2020-08-21 19:04:55,674 INFO L268 CegarLoopResult]: For program point L130(lines 130 282) no Hoare annotation was computed. [2020-08-21 19:04:55,675 INFO L268 CegarLoopResult]: For program point L477(lines 477 488) no Hoare annotation was computed. [2020-08-21 19:04:55,675 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 183) no Hoare annotation was computed. [2020-08-21 19:04:55,675 INFO L268 CegarLoopResult]: For program point L791(lines 791 950) no Hoare annotation was computed. [2020-08-21 19:04:55,675 INFO L268 CegarLoopResult]: For program point L246(lines 246 281) no Hoare annotation was computed. [2020-08-21 19:04:55,675 INFO L268 CegarLoopResult]: For program point L81(lines 81 284) no Hoare annotation was computed. [2020-08-21 19:04:55,676 INFO L268 CegarLoopResult]: For program point L527(lines 527 973) no Hoare annotation was computed. [2020-08-21 19:04:55,676 INFO L268 CegarLoopResult]: For program point L296(lines 296 995) no Hoare annotation was computed. [2020-08-21 19:04:55,676 INFO L268 CegarLoopResult]: For program point L32(lines 32 56) no Hoare annotation was computed. [2020-08-21 19:04:55,676 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2020-08-21 19:04:55,676 INFO L268 CegarLoopResult]: For program point L511(lines 511 975) no Hoare annotation was computed. [2020-08-21 19:04:55,676 INFO L268 CegarLoopResult]: For program point L891(lines 891 903) no Hoare annotation was computed. [2020-08-21 19:04:55,677 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 19:04:55,677 INFO L268 CegarLoopResult]: For program point L181(lines 181 189) no Hoare annotation was computed. [2020-08-21 19:04:55,677 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-08-21 19:04:55,677 INFO L268 CegarLoopResult]: For program point L330(lines 330 354) no Hoare annotation was computed. [2020-08-21 19:04:55,677 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-08-21 19:04:55,678 INFO L268 CegarLoopResult]: For program point L545(lines 545 556) no Hoare annotation was computed. [2020-08-21 19:04:55,678 INFO L268 CegarLoopResult]: For program point L215(lines 215 227) no Hoare annotation was computed. [2020-08-21 19:04:55,678 INFO L268 CegarLoopResult]: For program point L595(lines 595 967) no Hoare annotation was computed. [2020-08-21 19:04:55,678 INFO L268 CegarLoopResult]: For program point L364(lines 364 989) no Hoare annotation was computed. [2020-08-21 19:04:55,678 INFO L268 CegarLoopResult]: For program point L265(lines 265 273) no Hoare annotation was computed. [2020-08-21 19:04:55,678 INFO L268 CegarLoopResult]: For program point L579(lines 579 969) no Hoare annotation was computed. [2020-08-21 19:04:55,679 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-08-21 19:04:55,679 INFO L268 CegarLoopResult]: For program point L893(line 893) no Hoare annotation was computed. [2020-08-21 19:04:55,679 INFO L268 CegarLoopResult]: For program point L315(lines 315 992) no Hoare annotation was computed. [2020-08-21 19:04:55,679 INFO L268 CegarLoopResult]: For program point L183(line 183) no Hoare annotation was computed. [2020-08-21 19:04:55,679 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 881) no Hoare annotation was computed. [2020-08-21 19:04:55,680 INFO L268 CegarLoopResult]: For program point L398(lines 398 422) no Hoare annotation was computed. [2020-08-21 19:04:55,681 INFO L268 CegarLoopResult]: For program point L134(lines 134 240) no Hoare annotation was computed. [2020-08-21 19:04:55,681 INFO L268 CegarLoopResult]: For program point L101(lines 101 123) no Hoare annotation was computed. [2020-08-21 19:04:55,681 INFO L268 CegarLoopResult]: For program point L613(lines 613 624) no Hoare annotation was computed. [2020-08-21 19:04:55,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:04:55 BoogieIcfgContainer [2020-08-21 19:04:55,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:04:55,727 INFO L168 Benchmark]: Toolchain (without parser) took 9227.16 ms. Allocated memory was 141.0 MB in the beginning and 310.4 MB in the end (delta: 169.3 MB). Free memory was 103.8 MB in the beginning and 165.6 MB in the end (delta: -61.8 MB). Peak memory consumption was 107.5 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:55,735 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-21 19:04:55,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.99 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.8 MB in the beginning and 177.6 MB in the end (delta: -73.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:55,737 INFO L168 Benchmark]: Boogie Preprocessor took 62.66 ms. Allocated memory is still 203.9 MB. Free memory was 177.6 MB in the beginning and 174.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:55,742 INFO L168 Benchmark]: RCFGBuilder took 754.53 ms. Allocated memory is still 203.9 MB. Free memory was 174.7 MB in the beginning and 125.3 MB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:55,743 INFO L168 Benchmark]: TraceAbstraction took 7766.39 ms. Allocated memory was 203.9 MB in the beginning and 310.4 MB in the end (delta: 106.4 MB). Free memory was 124.4 MB in the beginning and 165.6 MB in the end (delta: -41.2 MB). Peak memory consumption was 65.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:04:55,754 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.99 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.8 MB in the beginning and 177.6 MB in the end (delta: -73.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.66 ms. Allocated memory is still 203.9 MB. Free memory was 177.6 MB in the beginning and 174.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 754.53 ms. Allocated memory is still 203.9 MB. Free memory was 174.7 MB in the beginning and 125.3 MB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7766.39 ms. Allocated memory was 203.9 MB in the beginning and 310.4 MB in the end (delta: 106.4 MB). Free memory was 124.4 MB in the beginning and 165.6 MB in the end (delta: -41.2 MB). Peak memory consumption was 65.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 929]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 183]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 205]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 893]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 217]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 255]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 917]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 881]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 143]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 267]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 103]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 171]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 155]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 115]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((__tmp_2624_0 == \old(__tmp_2624_0) && __tmp_2624_1 == \old(__tmp_2624_1)) && \old(__return_2598) == __return_2598) && __tmp_3137_1 == \old(__tmp_3137_1)) && __tmp_3137_0 == \old(__tmp_3137_0)) || 0 <= main__t - InvariantResult [Line: 856]: Loop Invariant Derived loop invariant: 9 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: main__t + 1 <= main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: main__t <= main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.4s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 769 SDtfs, 2593 SDslu, 667 SDs, 0 SdLazy, 3420 SolverSat, 507 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 231 GetRequests, 58 SyntacticMatches, 36 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 92 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 87 HoareAnnotationTreeSize, 9 FomulaSimplifications, 649 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 396 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 380 ConstructedInterpolants, 0 QuantifiedInterpolants, 43150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...