/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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 16:39:47,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:39:47,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:39:47,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:39:47,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:39:47,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:39:47,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:39:47,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:39:47,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:39:47,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:39:47,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:39:47,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:39:47,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:39:47,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:39:47,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:39:47,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:39:47,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:39:47,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:39:47,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:39:47,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:39:47,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:39:47,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:39:47,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:39:47,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:39:47,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:39:47,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:39:47,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:39:47,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:39:47,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:39:47,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:39:47,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:39:47,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:39:47,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:39:47,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:39:47,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:39:47,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:39:47,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:39:47,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:39:47,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:39:47,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:39:47,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:39:47,139 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 16:39:47,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:39:47,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:39:47,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:39:47,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:39:47,162 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:39:47,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:39:47,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:39:47,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:39:47,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:39:47,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:39:47,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:39:47,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:39:47,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:39:47,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:39:47,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:39:47,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:39:47,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:39:47,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:39:47,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:39:47,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:39:47,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:39:47,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:39:47,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:39:47,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:39:47,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:39:47,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:39:47,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:39:47,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:39:47,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:39:47,167 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:39:47,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:39:47,491 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:39:47,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:39:47,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:39:47,500 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:39:47,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-08-21 16:39:47,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37d522827/b866660c88f1482a9b33fa11f7832763/FLAG5d255e413 [2020-08-21 16:39:48,091 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:39:48,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-08-21 16:39:48,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37d522827/b866660c88f1482a9b33fa11f7832763/FLAG5d255e413 [2020-08-21 16:39:48,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37d522827/b866660c88f1482a9b33fa11f7832763 [2020-08-21 16:39:48,388 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:39:48,390 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:39:48,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:39:48,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:39:48,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:39:48,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:39:48" (1/1) ... [2020-08-21 16:39:48,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d198e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:48, skipping insertion in model container [2020-08-21 16:39:48,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:39:48" (1/1) ... [2020-08-21 16:39:48,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:39:48,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:39:48,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:39:48,773 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:39:48,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:39:48,952 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:39:48,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:48 WrapperNode [2020-08-21 16:39:48,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:39:48,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:39:48,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:39:48,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:39:48,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:48" (1/1) ... [2020-08-21 16:39:48,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:48" (1/1) ... [2020-08-21 16:39:48,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:48" (1/1) ... [2020-08-21 16:39:48,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:48" (1/1) ... [2020-08-21 16:39:48,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:48" (1/1) ... [2020-08-21 16:39:49,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:48" (1/1) ... [2020-08-21 16:39:49,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:48" (1/1) ... [2020-08-21 16:39:49,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:39:49,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:39:49,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:39:49,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:39:49,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:48" (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 16:39:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:39:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:39:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 16:39:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:39:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:39:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 16:39:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 16:39:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 16:39:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:39:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:39:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:39:49,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:39:49,851 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:39:49,851 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 16:39:49,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:39:49 BoogieIcfgContainer [2020-08-21 16:39:49,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:39:49,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:39:49,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:39:49,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:39:49,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:39:48" (1/3) ... [2020-08-21 16:39:49,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205b3cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:39:49, skipping insertion in model container [2020-08-21 16:39:49,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:39:48" (2/3) ... [2020-08-21 16:39:49,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205b3cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:39:49, skipping insertion in model container [2020-08-21 16:39:49,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:39:49" (3/3) ... [2020-08-21 16:39:49,866 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-08-21 16:39:49,877 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:39:49,886 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-08-21 16:39:49,900 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-08-21 16:39:49,928 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:39:49,928 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:39:49,928 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:39:49,928 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:39:49,929 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:39:49,929 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:39:49,929 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:39:49,929 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:39:49,953 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2020-08-21 16:39:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 16:39:49,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:49,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:39:49,962 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 16:39:49,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:49,968 INFO L82 PathProgramCache]: Analyzing trace with hash 692755954, now seen corresponding path program 1 times [2020-08-21 16:39:49,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:49,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164490935] [2020-08-21 16:39:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:50,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:50,204 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 16:39:50,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164490935] [2020-08-21 16:39:50,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:50,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:39:50,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934486593] [2020-08-21 16:39:50,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:39:50,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:50,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:39:50,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:39:50,236 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 5 states. [2020-08-21 16:39:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:50,851 INFO L93 Difference]: Finished difference Result 143 states and 221 transitions. [2020-08-21 16:39:50,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:39:50,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-21 16:39:50,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:50,869 INFO L225 Difference]: With dead ends: 143 [2020-08-21 16:39:50,869 INFO L226 Difference]: Without dead ends: 123 [2020-08-21 16:39:50,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:39:50,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-21 16:39:50,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 118. [2020-08-21 16:39:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 16:39:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2020-08-21 16:39:50,936 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 11 [2020-08-21 16:39:50,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:50,937 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2020-08-21 16:39:50,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:39:50,937 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2020-08-21 16:39:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 16:39:50,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:50,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:39:50,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:39:50,939 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 16:39:50,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:50,939 INFO L82 PathProgramCache]: Analyzing trace with hash 601163, now seen corresponding path program 1 times [2020-08-21 16:39:50,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:50,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088442500] [2020-08-21 16:39:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:51,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:51,017 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 16:39:51,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088442500] [2020-08-21 16:39:51,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:51,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:39:51,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226082743] [2020-08-21 16:39:51,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:39:51,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:51,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:39:51,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:39:51,022 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand 5 states. [2020-08-21 16:39:51,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:51,389 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2020-08-21 16:39:51,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:39:51,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-21 16:39:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:51,392 INFO L225 Difference]: With dead ends: 121 [2020-08-21 16:39:51,392 INFO L226 Difference]: Without dead ends: 113 [2020-08-21 16:39:51,393 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 16:39:51,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-21 16:39:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-08-21 16:39:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-21 16:39:51,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2020-08-21 16:39:51,406 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 12 [2020-08-21 16:39:51,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:51,407 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2020-08-21 16:39:51,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:39:51,407 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2020-08-21 16:39:51,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 16:39:51,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:51,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:39:51,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:39:51,409 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 16:39:51,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:51,409 INFO L82 PathProgramCache]: Analyzing trace with hash -438066310, now seen corresponding path program 1 times [2020-08-21 16:39:51,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:51,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111562134] [2020-08-21 16:39:51,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:51,490 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 16:39:51,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111562134] [2020-08-21 16:39:51,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:51,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:39:51,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528967275] [2020-08-21 16:39:51,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:39:51,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:51,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:39:51,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:39:51,493 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand 6 states. [2020-08-21 16:39:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:51,876 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2020-08-21 16:39:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:39:51,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-21 16:39:51,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:51,878 INFO L225 Difference]: With dead ends: 113 [2020-08-21 16:39:51,878 INFO L226 Difference]: Without dead ends: 111 [2020-08-21 16:39:51,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 16:39:51,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-21 16:39:51,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-08-21 16:39:51,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-21 16:39:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2020-08-21 16:39:51,889 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 15 [2020-08-21 16:39:51,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:51,890 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2020-08-21 16:39:51,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:39:51,890 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2020-08-21 16:39:51,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 16:39:51,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:51,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:39:51,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:39:51,892 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 16:39:51,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:51,892 INFO L82 PathProgramCache]: Analyzing trace with hash -695150622, now seen corresponding path program 1 times [2020-08-21 16:39:51,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:51,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310329610] [2020-08-21 16:39:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:51,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:51,960 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 16:39:51,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310329610] [2020-08-21 16:39:51,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:51,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:39:51,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776550004] [2020-08-21 16:39:51,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:39:51,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:51,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:39:51,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:39:51,963 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 5 states. [2020-08-21 16:39:52,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:52,220 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-08-21 16:39:52,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:39:52,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-21 16:39:52,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:52,222 INFO L225 Difference]: With dead ends: 111 [2020-08-21 16:39:52,222 INFO L226 Difference]: Without dead ends: 107 [2020-08-21 16:39:52,223 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 16:39:52,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-08-21 16:39:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-08-21 16:39:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-21 16:39:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2020-08-21 16:39:52,231 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 16 [2020-08-21 16:39:52,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:52,232 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2020-08-21 16:39:52,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:39:52,232 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2020-08-21 16:39:52,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 16:39:52,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:52,233 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 16:39:52,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:39:52,234 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 16:39:52,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:52,234 INFO L82 PathProgramCache]: Analyzing trace with hash -61564757, now seen corresponding path program 1 times [2020-08-21 16:39:52,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:52,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916333725] [2020-08-21 16:39:52,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:52,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:52,299 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 16:39:52,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916333725] [2020-08-21 16:39:52,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:52,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:39:52,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708910744] [2020-08-21 16:39:52,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:39:52,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:52,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:39:52,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:39:52,302 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand 6 states. [2020-08-21 16:39:52,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:52,648 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2020-08-21 16:39:52,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:39:52,649 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 16:39:52,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:52,650 INFO L225 Difference]: With dead ends: 125 [2020-08-21 16:39:52,650 INFO L226 Difference]: Without dead ends: 123 [2020-08-21 16:39:52,651 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 16:39:52,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-21 16:39:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2020-08-21 16:39:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 16:39:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2020-08-21 16:39:52,660 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 17 [2020-08-21 16:39:52,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:52,660 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2020-08-21 16:39:52,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:39:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2020-08-21 16:39:52,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 16:39:52,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:52,661 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 16:39:52,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:39:52,662 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 16:39:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:52,662 INFO L82 PathProgramCache]: Analyzing trace with hash -60025557, now seen corresponding path program 1 times [2020-08-21 16:39:52,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:52,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749017445] [2020-08-21 16:39:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:52,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:52,740 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 16:39:52,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749017445] [2020-08-21 16:39:52,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:52,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:39:52,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605745490] [2020-08-21 16:39:52,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:39:52,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:52,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:39:52,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:39:52,742 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand 6 states. [2020-08-21 16:39:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:53,062 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-08-21 16:39:53,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:39:53,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 16:39:53,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:53,064 INFO L225 Difference]: With dead ends: 105 [2020-08-21 16:39:53,065 INFO L226 Difference]: Without dead ends: 103 [2020-08-21 16:39:53,066 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 16:39:53,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-08-21 16:39:53,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-08-21 16:39:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-08-21 16:39:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2020-08-21 16:39:53,073 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2020-08-21 16:39:53,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:53,073 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2020-08-21 16:39:53,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:39:53,073 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2020-08-21 16:39:53,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 16:39:53,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:53,074 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 16:39:53,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:39:53,075 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 16:39:53,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:53,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1907138927, now seen corresponding path program 1 times [2020-08-21 16:39:53,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:53,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81869020] [2020-08-21 16:39:53,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:53,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:53,148 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 16:39:53,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81869020] [2020-08-21 16:39:53,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:53,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:39:53,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676739128] [2020-08-21 16:39:53,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:39:53,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:53,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:39:53,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:39:53,150 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand 6 states. [2020-08-21 16:39:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:53,505 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-08-21 16:39:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:39:53,506 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 16:39:53,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:53,507 INFO L225 Difference]: With dead ends: 124 [2020-08-21 16:39:53,507 INFO L226 Difference]: Without dead ends: 122 [2020-08-21 16:39:53,507 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 16:39:53,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-21 16:39:53,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2020-08-21 16:39:53,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-21 16:39:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-08-21 16:39:53,514 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 18 [2020-08-21 16:39:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:53,514 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-08-21 16:39:53,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:39:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-08-21 16:39:53,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 16:39:53,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:53,515 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 16:39:53,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:39:53,516 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 16:39:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:53,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1908504347, now seen corresponding path program 1 times [2020-08-21 16:39:53,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:53,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184911134] [2020-08-21 16:39:53,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:53,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:53,598 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 16:39:53,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184911134] [2020-08-21 16:39:53,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:53,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:39:53,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280658574] [2020-08-21 16:39:53,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:39:53,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:53,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:39:53,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:39:53,600 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 6 states. [2020-08-21 16:39:53,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:53,973 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-08-21 16:39:53,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:39:53,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 16:39:53,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:53,976 INFO L225 Difference]: With dead ends: 116 [2020-08-21 16:39:53,976 INFO L226 Difference]: Without dead ends: 114 [2020-08-21 16:39:53,976 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 16:39:53,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-21 16:39:53,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2020-08-21 16:39:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-21 16:39:53,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-08-21 16:39:53,991 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 18 [2020-08-21 16:39:53,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:53,991 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-08-21 16:39:53,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:39:53,992 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-08-21 16:39:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 16:39:53,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:53,992 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 16:39:53,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:39:53,993 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 16:39:53,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:53,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1860789097, now seen corresponding path program 1 times [2020-08-21 16:39:53,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:53,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247856864] [2020-08-21 16:39:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:54,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:54,070 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 16:39:54,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247856864] [2020-08-21 16:39:54,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:54,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:39:54,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075796200] [2020-08-21 16:39:54,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:39:54,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:54,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:39:54,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:39:54,072 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-08-21 16:39:54,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:54,384 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2020-08-21 16:39:54,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 16:39:54,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 16:39:54,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:54,386 INFO L225 Difference]: With dead ends: 99 [2020-08-21 16:39:54,386 INFO L226 Difference]: Without dead ends: 95 [2020-08-21 16:39:54,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:39:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-21 16:39:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-08-21 16:39:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-21 16:39:54,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-08-21 16:39:54,398 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 18 [2020-08-21 16:39:54,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:54,399 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-08-21 16:39:54,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:39:54,399 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-08-21 16:39:54,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 16:39:54,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:54,400 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 16:39:54,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:39:54,401 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 16:39:54,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:54,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1008238558, now seen corresponding path program 1 times [2020-08-21 16:39:54,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:54,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775448937] [2020-08-21 16:39:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:54,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:54,515 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 16:39:54,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775448937] [2020-08-21 16:39:54,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:54,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:39:54,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135142729] [2020-08-21 16:39:54,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:39:54,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:54,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:39:54,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:39:54,517 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 6 states. [2020-08-21 16:39:54,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:54,874 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2020-08-21 16:39:54,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:39:54,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-21 16:39:54,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:54,876 INFO L225 Difference]: With dead ends: 111 [2020-08-21 16:39:54,876 INFO L226 Difference]: Without dead ends: 109 [2020-08-21 16:39:54,878 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 16:39:54,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-21 16:39:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2020-08-21 16:39:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-21 16:39:54,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-08-21 16:39:54,883 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 19 [2020-08-21 16:39:54,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:54,883 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-08-21 16:39:54,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:39:54,883 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-08-21 16:39:54,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 16:39:54,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:54,884 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 16:39:54,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:39:54,884 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 16:39:54,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:54,885 INFO L82 PathProgramCache]: Analyzing trace with hash -121545016, now seen corresponding path program 1 times [2020-08-21 16:39:54,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:54,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25030777] [2020-08-21 16:39:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:54,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:54,929 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 16:39:54,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25030777] [2020-08-21 16:39:54,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:54,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:39:54,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515532871] [2020-08-21 16:39:54,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:39:54,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:54,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:39:54,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:39:54,932 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 5 states. [2020-08-21 16:39:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:55,130 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-08-21 16:39:55,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:39:55,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-21 16:39:55,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:55,132 INFO L225 Difference]: With dead ends: 93 [2020-08-21 16:39:55,132 INFO L226 Difference]: Without dead ends: 91 [2020-08-21 16:39:55,132 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 16:39:55,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-08-21 16:39:55,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-08-21 16:39:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-21 16:39:55,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-08-21 16:39:55,136 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 20 [2020-08-21 16:39:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:55,136 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-08-21 16:39:55,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:39:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-08-21 16:39:55,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 16:39:55,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:55,137 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 16:39:55,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:39:55,138 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 16:39:55,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:55,138 INFO L82 PathProgramCache]: Analyzing trace with hash 527074935, now seen corresponding path program 1 times [2020-08-21 16:39:55,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:55,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670220972] [2020-08-21 16:39:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:55,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:55,187 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 16:39:55,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670220972] [2020-08-21 16:39:55,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:55,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:39:55,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120853381] [2020-08-21 16:39:55,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:39:55,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:55,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:39:55,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:39:55,189 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 5 states. [2020-08-21 16:39:55,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:55,406 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2020-08-21 16:39:55,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:39:55,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 16:39:55,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:55,407 INFO L225 Difference]: With dead ends: 91 [2020-08-21 16:39:55,407 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 16:39:55,408 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 16:39:55,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 16:39:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-08-21 16:39:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-21 16:39:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-08-21 16:39:55,411 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 21 [2020-08-21 16:39:55,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:55,411 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-08-21 16:39:55,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:39:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-08-21 16:39:55,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 16:39:55,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:55,413 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 16:39:55,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 16:39:55,413 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 16:39:55,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:55,414 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833109, now seen corresponding path program 1 times [2020-08-21 16:39:55,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:55,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037545190] [2020-08-21 16:39:55,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:55,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:55,614 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 16:39:55,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037545190] [2020-08-21 16:39:55,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:55,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 16:39:55,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893760762] [2020-08-21 16:39:55,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 16:39:55,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:55,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 16:39:55,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:39:55,617 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 14 states. [2020-08-21 16:39:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:55,970 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-08-21 16:39:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 16:39:55,971 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-08-21 16:39:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:55,972 INFO L225 Difference]: With dead ends: 67 [2020-08-21 16:39:55,973 INFO L226 Difference]: Without dead ends: 65 [2020-08-21 16:39:55,974 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 16:39:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-21 16:39:55,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2020-08-21 16:39:55,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-21 16:39:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-08-21 16:39:55,977 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 48 [2020-08-21 16:39:55,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:55,977 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-08-21 16:39:55,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 16:39:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-08-21 16:39:55,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 16:39:55,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:55,979 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 16:39:55,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 16:39:55,979 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 16:39:55,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:55,980 INFO L82 PathProgramCache]: Analyzing trace with hash 2058819207, now seen corresponding path program 1 times [2020-08-21 16:39:55,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:55,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602468041] [2020-08-21 16:39:55,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:56,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:56,157 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 16:39:56,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602468041] [2020-08-21 16:39:56,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:56,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 16:39:56,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514653232] [2020-08-21 16:39:56,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 16:39:56,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:56,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 16:39:56,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:39:56,161 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 14 states. [2020-08-21 16:39:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:56,486 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-08-21 16:39:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 16:39:56,486 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-08-21 16:39:56,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:56,487 INFO L225 Difference]: With dead ends: 56 [2020-08-21 16:39:56,487 INFO L226 Difference]: Without dead ends: 54 [2020-08-21 16:39:56,488 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 16:39:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-21 16:39:56,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-21 16:39:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 16:39:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-08-21 16:39:56,491 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 48 [2020-08-21 16:39:56,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:56,491 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-08-21 16:39:56,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 16:39:56,491 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-08-21 16:39:56,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-21 16:39:56,492 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:56,492 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 16:39:56,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 16:39:56,492 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 16:39:56,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:56,492 INFO L82 PathProgramCache]: Analyzing trace with hash -600679635, now seen corresponding path program 1 times [2020-08-21 16:39:56,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:56,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435233869] [2020-08-21 16:39:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:56,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:56,701 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 16:39:56,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435233869] [2020-08-21 16:39:56,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:56,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:39:56,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199294536] [2020-08-21 16:39:56,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:39:56,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:56,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:39:56,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:39:56,704 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 6 states. [2020-08-21 16:39:56,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:56,910 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-08-21 16:39:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:39:56,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-08-21 16:39:56,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:56,912 INFO L225 Difference]: With dead ends: 62 [2020-08-21 16:39:56,912 INFO L226 Difference]: Without dead ends: 60 [2020-08-21 16:39:56,913 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 16:39:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-21 16:39:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-08-21 16:39:56,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 16:39:56,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-08-21 16:39:56,916 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2020-08-21 16:39:56,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:56,916 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-08-21 16:39:56,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:39:56,916 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-08-21 16:39:56,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-21 16:39:56,917 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:39:56,917 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 16:39:56,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 16:39:56,918 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 16:39:56,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:39:56,918 INFO L82 PathProgramCache]: Analyzing trace with hash -601110611, now seen corresponding path program 1 times [2020-08-21 16:39:56,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:39:56,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498637201] [2020-08-21 16:39:56,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:39:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:57,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:39:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:39:57,130 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 16:39:57,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498637201] [2020-08-21 16:39:57,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:39:57,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 16:39:57,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750004660] [2020-08-21 16:39:57,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:39:57,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:39:57,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:39:57,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:39:57,132 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 6 states. [2020-08-21 16:39:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:39:57,275 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-08-21 16:39:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 16:39:57,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-08-21 16:39:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:39:57,276 INFO L225 Difference]: With dead ends: 52 [2020-08-21 16:39:57,276 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 16:39:57,277 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 16:39:57,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 16:39:57,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 16:39:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 16:39:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 16:39:57,278 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-08-21 16:39:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:39:57,279 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 16:39:57,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:39:57,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 16:39:57,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 16:39:57,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 16:39:57,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 16:39:57,434 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 16:39:57,435 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 16:39:57,435 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 16:39:57,435 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 16:39:57,435 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 16:39:57,435 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 16:39:57,435 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 16:39:57,435 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-21 16:39:57,436 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-21 16:39:57,436 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-21 16:39:57,436 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-21 16:39:57,436 INFO L268 CegarLoopResult]: For program point L927(lines 927 939) no Hoare annotation was computed. [2020-08-21 16:39:57,436 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2020-08-21 16:39:57,436 INFO L268 CegarLoopResult]: For program point L217(line 217) no Hoare annotation was computed. [2020-08-21 16:39:57,437 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 15 1004) no Hoare annotation was computed. [2020-08-21 16:39:57,437 INFO L268 CegarLoopResult]: For program point L663(lines 663 961) no Hoare annotation was computed. [2020-08-21 16:39:57,437 INFO L268 CegarLoopResult]: For program point L432(lines 432 983) no Hoare annotation was computed. [2020-08-21 16:39:57,437 INFO L268 CegarLoopResult]: For program point L267(line 267) no Hoare annotation was computed. [2020-08-21 16:39:57,437 INFO L268 CegarLoopResult]: For program point L647(lines 647 963) no Hoare annotation was computed. [2020-08-21 16:39:57,437 INFO L268 CegarLoopResult]: For program point L383(lines 383 986) no Hoare annotation was computed. [2020-08-21 16:39:57,437 INFO L268 CegarLoopResult]: For program point L20(lines 20 1003) no Hoare annotation was computed. [2020-08-21 16:39:57,437 INFO L268 CegarLoopResult]: For program point L466(lines 466 490) no Hoare annotation was computed. [2020-08-21 16:39:57,438 INFO L268 CegarLoopResult]: For program point L879(lines 879 905) no Hoare annotation was computed. [2020-08-21 16:39:57,438 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 917) no Hoare annotation was computed. [2020-08-21 16:39:57,438 INFO L268 CegarLoopResult]: For program point L169(lines 169 191) no Hoare annotation was computed. [2020-08-21 16:39:57,438 INFO L268 CegarLoopResult]: For program point L681(lines 681 692) no Hoare annotation was computed. [2020-08-21 16:39:57,438 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-08-21 16:39:57,438 INFO L268 CegarLoopResult]: For program point L70(lines 70 286) no Hoare annotation was computed. [2020-08-21 16:39:57,438 INFO L268 CegarLoopResult]: For program point L929(line 929) no Hoare annotation was computed. [2020-08-21 16:39:57,439 INFO L268 CegarLoopResult]: For program point L731(lines 731 955) no Hoare annotation was computed. [2020-08-21 16:39:57,439 INFO L268 CegarLoopResult]: For program point L153(lines 153 232) no Hoare annotation was computed. [2020-08-21 16:39:57,439 INFO L268 CegarLoopResult]: For program point L500(lines 500 977) no Hoare annotation was computed. [2020-08-21 16:39:57,439 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 15 1004) no Hoare annotation was computed. [2020-08-21 16:39:57,439 INFO L268 CegarLoopResult]: For program point L203(lines 203 229) no Hoare annotation was computed. [2020-08-21 16:39:57,439 INFO L268 CegarLoopResult]: For program point L715(lines 715 957) no Hoare annotation was computed. [2020-08-21 16:39:57,439 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 893) no Hoare annotation was computed. [2020-08-21 16:39:57,440 INFO L268 CegarLoopResult]: For program point L451(lines 451 980) no Hoare annotation was computed. [2020-08-21 16:39:57,441 INFO L268 CegarLoopResult]: For program point L864(lines 864 944) no Hoare annotation was computed. [2020-08-21 16:39:57,441 INFO L268 CegarLoopResult]: For program point L253(lines 253 275) no Hoare annotation was computed. [2020-08-21 16:39:57,441 INFO L268 CegarLoopResult]: For program point L534(lines 534 558) no Hoare annotation was computed. [2020-08-21 16:39:57,441 INFO L268 CegarLoopResult]: For program point L881(line 881) no Hoare annotation was computed. [2020-08-21 16:39:57,441 INFO L268 CegarLoopResult]: For program point L749(lines 749 760) no Hoare annotation was computed. [2020-08-21 16:39:57,442 INFO L268 CegarLoopResult]: For program point L171(line 171) no Hoare annotation was computed. [2020-08-21 16:39:57,442 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 205) no Hoare annotation was computed. [2020-08-21 16:39:57,442 INFO L268 CegarLoopResult]: For program point L799(lines 799 949) no Hoare annotation was computed. [2020-08-21 16:39:57,443 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-08-21 16:39:57,443 INFO L268 CegarLoopResult]: For program point L568(lines 568 971) no Hoare annotation was computed. [2020-08-21 16:39:57,443 INFO L268 CegarLoopResult]: For program point L915(lines 915 941) no Hoare annotation was computed. [2020-08-21 16:39:57,443 INFO L268 CegarLoopResult]: For program point L783(lines 783 951) no Hoare annotation was computed. [2020-08-21 16:39:57,443 INFO L268 CegarLoopResult]: For program point L205(line 205) no Hoare annotation was computed. [2020-08-21 16:39:57,443 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 929) no Hoare annotation was computed. [2020-08-21 16:39:57,443 INFO L268 CegarLoopResult]: For program point L519(lines 519 974) no Hoare annotation was computed. [2020-08-21 16:39:57,443 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 16:39:57,444 INFO L268 CegarLoopResult]: For program point L255(line 255) no Hoare annotation was computed. [2020-08-21 16:39:57,444 INFO L268 CegarLoopResult]: For program point L602(lines 602 626) no Hoare annotation was computed. [2020-08-21 16:39:57,444 INFO L268 CegarLoopResult]: For program point L24(lines 24 998) no Hoare annotation was computed. [2020-08-21 16:39:57,444 INFO L268 CegarLoopResult]: For program point L817(lines 817 828) no Hoare annotation was computed. [2020-08-21 16:39:57,444 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2020-08-21 16:39:57,444 INFO L268 CegarLoopResult]: For program point L636(lines 636 965) no Hoare annotation was computed. [2020-08-21 16:39:57,444 INFO L268 CegarLoopResult]: For program point L917(line 917) no Hoare annotation was computed. [2020-08-21 16:39:57,444 INFO L268 CegarLoopResult]: For program point L851(lines 851 945) no Hoare annotation was computed. [2020-08-21 16:39:57,444 INFO L268 CegarLoopResult]: For program point L141(lines 141 234) no Hoare annotation was computed. [2020-08-21 16:39:57,445 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2020-08-21 16:39:57,445 INFO L268 CegarLoopResult]: For program point L587(lines 587 968) no Hoare annotation was computed. [2020-08-21 16:39:57,445 INFO L268 CegarLoopResult]: For program point L323(lines 323 991) no Hoare annotation was computed. [2020-08-21 16:39:57,445 INFO L268 CegarLoopResult]: For program point L670(lines 670 694) no Hoare annotation was computed. [2020-08-21 16:39:57,446 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-08-21 16:39:57,446 INFO L268 CegarLoopResult]: For program point L307(lines 307 993) no Hoare annotation was computed. [2020-08-21 16:39:57,447 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 16:39:57,447 INFO L268 CegarLoopResult]: For program point L704(lines 704 959) no Hoare annotation was computed. [2020-08-21 16:39:57,449 INFO L268 CegarLoopResult]: For program point L341(lines 341 352) no Hoare annotation was computed. [2020-08-21 16:39:57,449 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-08-21 16:39:57,449 INFO L268 CegarLoopResult]: For program point L655(lines 655 962) no Hoare annotation was computed. [2020-08-21 16:39:57,449 INFO L268 CegarLoopResult]: For program point L44(lines 44 54) no Hoare annotation was computed. [2020-08-21 16:39:57,450 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 267) no Hoare annotation was computed. [2020-08-21 16:39:57,450 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 16:39:57,450 INFO L268 CegarLoopResult]: For program point L391(lines 391 985) no Hoare annotation was computed. [2020-08-21 16:39:57,450 INFO L268 CegarLoopResult]: For program point L738(lines 738 762) no Hoare annotation was computed. [2020-08-21 16:39:57,450 INFO L268 CegarLoopResult]: For program point L94(lines 94 283) no Hoare annotation was computed. [2020-08-21 16:39:57,450 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 171) no Hoare annotation was computed. [2020-08-21 16:39:57,450 INFO L268 CegarLoopResult]: For program point L375(lines 375 987) no Hoare annotation was computed. [2020-08-21 16:39:57,451 INFO L268 CegarLoopResult]: For program point L772(lines 772 953) no Hoare annotation was computed. [2020-08-21 16:39:57,451 INFO L268 CegarLoopResult]: For program point L409(lines 409 420) no Hoare annotation was computed. [2020-08-21 16:39:57,451 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-08-21 16:39:57,451 INFO L268 CegarLoopResult]: For program point L723(lines 723 956) no Hoare annotation was computed. [2020-08-21 16:39:57,451 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-08-21 16:39:57,451 INFO L268 CegarLoopResult]: For program point L459(lines 459 979) no Hoare annotation was computed. [2020-08-21 16:39:57,451 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 16:39:57,452 INFO L268 CegarLoopResult]: For program point L872(lines 872 943) no Hoare annotation was computed. [2020-08-21 16:39:57,452 INFO L268 CegarLoopResult]: For program point L806(lines 806 830) no Hoare annotation was computed. [2020-08-21 16:39:57,452 INFO L268 CegarLoopResult]: For program point L162(lines 162 231) no Hoare annotation was computed. [2020-08-21 16:39:57,452 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-08-21 16:39:57,452 INFO L268 CegarLoopResult]: For program point L63(lines 63 997) no Hoare annotation was computed. [2020-08-21 16:39:57,452 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 16:39:57,452 INFO L268 CegarLoopResult]: For program point L443(lines 443 981) no Hoare annotation was computed. [2020-08-21 16:39:57,452 INFO L268 CegarLoopResult]: For program point L113(lines 113 121) no Hoare annotation was computed. [2020-08-21 16:39:57,453 INFO L268 CegarLoopResult]: For program point L840(lines 840 947) no Hoare annotation was computed. [2020-08-21 16:39:57,453 INFO L268 CegarLoopResult]: For program point L130(lines 130 282) no Hoare annotation was computed. [2020-08-21 16:39:57,453 INFO L268 CegarLoopResult]: For program point L477(lines 477 488) no Hoare annotation was computed. [2020-08-21 16:39:57,453 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 183) no Hoare annotation was computed. [2020-08-21 16:39:57,453 INFO L268 CegarLoopResult]: For program point L791(lines 791 950) no Hoare annotation was computed. [2020-08-21 16:39:57,453 INFO L268 CegarLoopResult]: For program point L246(lines 246 281) no Hoare annotation was computed. [2020-08-21 16:39:57,453 INFO L268 CegarLoopResult]: For program point L81(lines 81 284) no Hoare annotation was computed. [2020-08-21 16:39:57,453 INFO L268 CegarLoopResult]: For program point L527(lines 527 973) no Hoare annotation was computed. [2020-08-21 16:39:57,454 INFO L268 CegarLoopResult]: For program point L296(lines 296 995) no Hoare annotation was computed. [2020-08-21 16:39:57,454 INFO L268 CegarLoopResult]: For program point L32(lines 32 56) no Hoare annotation was computed. [2020-08-21 16:39:57,454 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2020-08-21 16:39:57,454 INFO L268 CegarLoopResult]: For program point L511(lines 511 975) no Hoare annotation was computed. [2020-08-21 16:39:57,454 INFO L268 CegarLoopResult]: For program point L891(lines 891 903) no Hoare annotation was computed. [2020-08-21 16:39:57,454 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 16:39:57,454 INFO L268 CegarLoopResult]: For program point L181(lines 181 189) no Hoare annotation was computed. [2020-08-21 16:39:57,454 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-08-21 16:39:57,455 INFO L268 CegarLoopResult]: For program point L330(lines 330 354) no Hoare annotation was computed. [2020-08-21 16:39:57,455 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-08-21 16:39:57,455 INFO L268 CegarLoopResult]: For program point L545(lines 545 556) no Hoare annotation was computed. [2020-08-21 16:39:57,455 INFO L268 CegarLoopResult]: For program point L215(lines 215 227) no Hoare annotation was computed. [2020-08-21 16:39:57,455 INFO L268 CegarLoopResult]: For program point L595(lines 595 967) no Hoare annotation was computed. [2020-08-21 16:39:57,455 INFO L268 CegarLoopResult]: For program point L364(lines 364 989) no Hoare annotation was computed. [2020-08-21 16:39:57,455 INFO L268 CegarLoopResult]: For program point L265(lines 265 273) no Hoare annotation was computed. [2020-08-21 16:39:57,455 INFO L268 CegarLoopResult]: For program point L579(lines 579 969) no Hoare annotation was computed. [2020-08-21 16:39:57,455 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-08-21 16:39:57,456 INFO L268 CegarLoopResult]: For program point L893(line 893) no Hoare annotation was computed. [2020-08-21 16:39:57,456 INFO L268 CegarLoopResult]: For program point L315(lines 315 992) no Hoare annotation was computed. [2020-08-21 16:39:57,456 INFO L268 CegarLoopResult]: For program point L183(line 183) no Hoare annotation was computed. [2020-08-21 16:39:57,456 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 881) no Hoare annotation was computed. [2020-08-21 16:39:57,457 INFO L268 CegarLoopResult]: For program point L398(lines 398 422) no Hoare annotation was computed. [2020-08-21 16:39:57,457 INFO L268 CegarLoopResult]: For program point L134(lines 134 240) no Hoare annotation was computed. [2020-08-21 16:39:57,457 INFO L268 CegarLoopResult]: For program point L101(lines 101 123) no Hoare annotation was computed. [2020-08-21 16:39:57,457 INFO L268 CegarLoopResult]: For program point L613(lines 613 624) no Hoare annotation was computed. [2020-08-21 16:39:57,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:39:57 BoogieIcfgContainer [2020-08-21 16:39:57,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:39:57,495 INFO L168 Benchmark]: Toolchain (without parser) took 9103.13 ms. Allocated memory was 139.5 MB in the beginning and 313.5 MB in the end (delta: 174.1 MB). Free memory was 101.5 MB in the beginning and 204.7 MB in the end (delta: -103.2 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:57,505 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 16:39:57,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 567.85 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 176.9 MB in the end (delta: -75.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:57,510 INFO L168 Benchmark]: Boogie Preprocessor took 57.45 ms. Allocated memory is still 202.9 MB. Free memory was 176.9 MB in the beginning and 174.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:57,510 INFO L168 Benchmark]: RCFGBuilder took 840.56 ms. Allocated memory is still 202.9 MB. Free memory was 174.1 MB in the beginning and 124.7 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:57,511 INFO L168 Benchmark]: TraceAbstraction took 7632.12 ms. Allocated memory was 202.9 MB in the beginning and 313.5 MB in the end (delta: 110.6 MB). Free memory was 124.0 MB in the beginning and 204.7 MB in the end (delta: -80.8 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-08-21 16:39:57,523 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 567.85 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.3 MB in the beginning and 176.9 MB in the end (delta: -75.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.45 ms. Allocated memory is still 202.9 MB. Free memory was 176.9 MB in the beginning and 174.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 840.56 ms. Allocated memory is still 202.9 MB. Free memory was 174.1 MB in the beginning and 124.7 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7632.12 ms. Allocated memory was 202.9 MB in the beginning and 313.5 MB in the end (delta: 110.6 MB). Free memory was 124.0 MB in the beginning and 204.7 MB in the end (delta: -80.8 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 929]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 183]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 205]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 893]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 217]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 255]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 917]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 881]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 143]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 267]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 103]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 171]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 155]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 115]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((__tmp_2624_0 == \old(__tmp_2624_0) && __tmp_2624_1 == \old(__tmp_2624_1)) && \old(__return_2598) == __return_2598) && __tmp_3137_1 == \old(__tmp_3137_1)) && __tmp_3137_0 == \old(__tmp_3137_0)) || 0 <= main__t - InvariantResult [Line: 856]: Loop Invariant Derived loop invariant: 9 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: main__t + 1 <= main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: main__t <= main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.3s, 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, 1.4s InterpolantComputationTime, 396 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 380 ConstructedInterpolants, 0 QuantifiedInterpolants, 43150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...