/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:16:17,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:16:17,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:16:17,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:16:17,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:16:17,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:16:17,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:16:17,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:16:17,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:16:17,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:16:17,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:16:17,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:16:17,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:16:17,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:16:17,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:16:17,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:16:17,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:16:17,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:16:17,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:16:17,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:16:17,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:16:17,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:16:17,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:16:17,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:16:17,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:16:17,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:16:17,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:16:17,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:16:17,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:16:17,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:16:17,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:16:17,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:16:17,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:16:17,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:16:17,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:16:17,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:16:17,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:16:17,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:16:17,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:16:17,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:16:17,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:16:17,161 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 12:16:17,192 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:16:17,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:16:17,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:16:17,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:16:17,197 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:16:17,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:16:17,197 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:16:17,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:16:17,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:16:17,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:16:17,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:16:17,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:16:17,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:16:17,199 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:16:17,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:16:17,199 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:16:17,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:16:17,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:16:17,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:16:17,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:16:17,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:16:17,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:16:17,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:16:17,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:16:17,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:16:17,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:16:17,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:16:17,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:16:17,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:16:17,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:16:17,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:16:17,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:16:17,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:16:17,529 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:16:17,530 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:16:17,531 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-18 12:16:17,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3a99d457/ffd3fd385fc748da84ba5c16b6bbb45a/FLAG3a1341d11 [2020-08-18 12:16:18,074 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:16:18,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-18 12:16:18,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3a99d457/ffd3fd385fc748da84ba5c16b6bbb45a/FLAG3a1341d11 [2020-08-18 12:16:18,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3a99d457/ffd3fd385fc748da84ba5c16b6bbb45a [2020-08-18 12:16:18,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:16:18,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:16:18,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:16:18,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:16:18,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:16:18,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:18,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7105da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18, skipping insertion in model container [2020-08-18 12:16:18,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:18,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:16:18,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:16:18,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:16:18,786 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:16:18,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:16:18,860 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:16:18,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18 WrapperNode [2020-08-18 12:16:18,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:16:18,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:16:18,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:16:18,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:16:18,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:18,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:18,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:18,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:18,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:18,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:19,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... [2020-08-18 12:16:19,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:16:19,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:16:19,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:16:19,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:16:19,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:16:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:16:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:16:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 12:16:19,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:16:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:16:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 12:16:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 12:16:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 12:16:19,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:16:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:16:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:16:19,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:16:19,522 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:16:19,522 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 12:16:19,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:16:19 BoogieIcfgContainer [2020-08-18 12:16:19,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:16:19,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:16:19,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:16:19,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:16:19,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:16:18" (1/3) ... [2020-08-18 12:16:19,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59360bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:16:19, skipping insertion in model container [2020-08-18 12:16:19,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:16:18" (2/3) ... [2020-08-18 12:16:19,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59360bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:16:19, skipping insertion in model container [2020-08-18 12:16:19,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:16:19" (3/3) ... [2020-08-18 12:16:19,540 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-08-18 12:16:19,556 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:16:19,565 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-08-18 12:16:19,580 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-08-18 12:16:19,618 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:16:19,618 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:16:19,618 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:16:19,618 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:16:19,619 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:16:19,619 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:16:19,620 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:16:19,620 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:16:19,647 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-08-18 12:16:19,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 12:16:19,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:19,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:19,656 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:19,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:19,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1093455773, now seen corresponding path program 1 times [2020-08-18 12:16:19,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:19,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454072850] [2020-08-18 12:16:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:19,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:19,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:19,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454072850] [2020-08-18 12:16:19,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:19,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:19,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296738267] [2020-08-18 12:16:19,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:19,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:19,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:19,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:19,986 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-08-18 12:16:20,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:20,445 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2020-08-18 12:16:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:16:20,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-08-18 12:16:20,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:20,461 INFO L225 Difference]: With dead ends: 137 [2020-08-18 12:16:20,461 INFO L226 Difference]: Without dead ends: 113 [2020-08-18 12:16:20,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:16:20,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-18 12:16:20,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2020-08-18 12:16:20,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-18 12:16:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-08-18 12:16:20,529 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 12 [2020-08-18 12:16:20,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:20,529 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-08-18 12:16:20,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:20,530 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-08-18 12:16:20,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 12:16:20,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:20,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:20,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:16:20,531 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:20,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:20,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1096690079, now seen corresponding path program 1 times [2020-08-18 12:16:20,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:20,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054256004] [2020-08-18 12:16:20,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:20,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:20,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054256004] [2020-08-18 12:16:20,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:20,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:16:20,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795063957] [2020-08-18 12:16:20,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:16:20,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:20,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:16:20,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:16:20,604 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 5 states. [2020-08-18 12:16:20,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:20,765 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-18 12:16:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:16:20,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-18 12:16:20,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:20,767 INFO L225 Difference]: With dead ends: 69 [2020-08-18 12:16:20,768 INFO L226 Difference]: Without dead ends: 67 [2020-08-18 12:16:20,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:16:20,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-18 12:16:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-08-18 12:16:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-18 12:16:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-08-18 12:16:20,779 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 12 [2020-08-18 12:16:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:20,779 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-08-18 12:16:20,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:16:20,780 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-08-18 12:16:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-18 12:16:20,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:20,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:20,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:16:20,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:20,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:20,782 INFO L82 PathProgramCache]: Analyzing trace with hash 362348992, now seen corresponding path program 1 times [2020-08-18 12:16:20,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:20,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415983399] [2020-08-18 12:16:20,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:20,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415983399] [2020-08-18 12:16:20,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:20,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:16:20,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030065217] [2020-08-18 12:16:20,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:16:20,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:20,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:16:20,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:16:20,872 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-08-18 12:16:21,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:21,026 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-08-18 12:16:21,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:21,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-18 12:16:21,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:21,028 INFO L225 Difference]: With dead ends: 73 [2020-08-18 12:16:21,028 INFO L226 Difference]: Without dead ends: 71 [2020-08-18 12:16:21,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:16:21,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-08-18 12:16:21,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-08-18 12:16:21,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-18 12:16:21,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-08-18 12:16:21,039 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 13 [2020-08-18 12:16:21,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:21,039 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-08-18 12:16:21,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:16:21,040 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-08-18 12:16:21,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 12:16:21,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:21,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:21,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:16:21,041 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:21,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:21,042 INFO L82 PathProgramCache]: Analyzing trace with hash -2105928756, now seen corresponding path program 1 times [2020-08-18 12:16:21,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:21,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468126065] [2020-08-18 12:16:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:21,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468126065] [2020-08-18 12:16:21,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:21,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:21,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25641622] [2020-08-18 12:16:21,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:21,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:21,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:21,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:21,124 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 6 states. [2020-08-18 12:16:21,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:21,295 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-08-18 12:16:21,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:21,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-18 12:16:21,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:21,297 INFO L225 Difference]: With dead ends: 71 [2020-08-18 12:16:21,297 INFO L226 Difference]: Without dead ends: 69 [2020-08-18 12:16:21,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-18 12:16:21,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-08-18 12:16:21,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 12:16:21,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-08-18 12:16:21,307 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2020-08-18 12:16:21,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:21,308 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-08-18 12:16:21,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:21,308 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-08-18 12:16:21,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 12:16:21,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:21,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:21,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:16:21,310 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:21,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:21,311 INFO L82 PathProgramCache]: Analyzing trace with hash 325126884, now seen corresponding path program 1 times [2020-08-18 12:16:21,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:21,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91755750] [2020-08-18 12:16:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:21,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91755750] [2020-08-18 12:16:21,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:21,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:21,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253187126] [2020-08-18 12:16:21,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:21,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:21,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:21,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:21,377 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 6 states. [2020-08-18 12:16:21,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:21,546 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-18 12:16:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:21,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-18 12:16:21,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:21,555 INFO L225 Difference]: With dead ends: 69 [2020-08-18 12:16:21,555 INFO L226 Difference]: Without dead ends: 67 [2020-08-18 12:16:21,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-18 12:16:21,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-08-18 12:16:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-18 12:16:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-08-18 12:16:21,563 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 15 [2020-08-18 12:16:21,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:21,563 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-08-18 12:16:21,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:21,563 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-08-18 12:16:21,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 12:16:21,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:21,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:21,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:16:21,565 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:21,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:21,565 INFO L82 PathProgramCache]: Analyzing trace with hash -858848822, now seen corresponding path program 1 times [2020-08-18 12:16:21,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:21,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853359546] [2020-08-18 12:16:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:21,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853359546] [2020-08-18 12:16:21,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:21,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:21,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100921744] [2020-08-18 12:16:21,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:21,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:21,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:21,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:21,636 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-08-18 12:16:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:21,878 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-08-18 12:16:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:21,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-18 12:16:21,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:21,882 INFO L225 Difference]: With dead ends: 112 [2020-08-18 12:16:21,883 INFO L226 Difference]: Without dead ends: 110 [2020-08-18 12:16:21,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:21,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-18 12:16:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 64. [2020-08-18 12:16:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-18 12:16:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-08-18 12:16:21,897 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 16 [2020-08-18 12:16:21,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:21,897 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-08-18 12:16:21,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-08-18 12:16:21,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 12:16:21,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:21,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:21,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:16:21,902 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:21,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:21,903 INFO L82 PathProgramCache]: Analyzing trace with hash -859278805, now seen corresponding path program 1 times [2020-08-18 12:16:21,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:21,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204219890] [2020-08-18 12:16:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:21,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204219890] [2020-08-18 12:16:21,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:21,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:16:21,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122926460] [2020-08-18 12:16:21,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:16:21,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:21,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:16:21,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:16:21,990 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-08-18 12:16:22,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:22,129 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-08-18 12:16:22,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:16:22,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-18 12:16:22,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:22,130 INFO L225 Difference]: With dead ends: 65 [2020-08-18 12:16:22,131 INFO L226 Difference]: Without dead ends: 61 [2020-08-18 12:16:22,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:16:22,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-18 12:16:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-18 12:16:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-18 12:16:22,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-08-18 12:16:22,137 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 16 [2020-08-18 12:16:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:22,137 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-08-18 12:16:22,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:16:22,138 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-08-18 12:16:22,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 12:16:22,139 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:22,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:22,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:16:22,139 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:22,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1489001901, now seen corresponding path program 1 times [2020-08-18 12:16:22,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:22,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480992077] [2020-08-18 12:16:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:22,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480992077] [2020-08-18 12:16:22,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:22,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:16:22,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955660943] [2020-08-18 12:16:22,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:16:22,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:22,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:16:22,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:16:22,186 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 5 states. [2020-08-18 12:16:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:22,303 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-08-18 12:16:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:16:22,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-18 12:16:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:22,305 INFO L225 Difference]: With dead ends: 61 [2020-08-18 12:16:22,305 INFO L226 Difference]: Without dead ends: 57 [2020-08-18 12:16:22,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:16:22,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-18 12:16:22,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-08-18 12:16:22,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-18 12:16:22,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-08-18 12:16:22,311 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2020-08-18 12:16:22,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:22,311 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-08-18 12:16:22,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:16:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-08-18 12:16:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 12:16:22,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:22,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:22,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:16:22,313 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:22,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:22,314 INFO L82 PathProgramCache]: Analyzing trace with hash -854506496, now seen corresponding path program 1 times [2020-08-18 12:16:22,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:22,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879589065] [2020-08-18 12:16:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:22,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879589065] [2020-08-18 12:16:22,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:22,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:16:22,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164895353] [2020-08-18 12:16:22,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:16:22,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:22,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:16:22,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:16:22,410 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-08-18 12:16:22,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:22,651 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-08-18 12:16:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:16:22,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-08-18 12:16:22,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:22,653 INFO L225 Difference]: With dead ends: 95 [2020-08-18 12:16:22,653 INFO L226 Difference]: Without dead ends: 93 [2020-08-18 12:16:22,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:16:22,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-18 12:16:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2020-08-18 12:16:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-18 12:16:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-08-18 12:16:22,659 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 17 [2020-08-18 12:16:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:22,659 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-08-18 12:16:22,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:16:22,660 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-08-18 12:16:22,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 12:16:22,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:22,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:22,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:16:22,661 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:22,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:22,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1071358986, now seen corresponding path program 1 times [2020-08-18 12:16:22,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:22,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56825097] [2020-08-18 12:16:22,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:22,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56825097] [2020-08-18 12:16:22,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:22,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:22,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689642754] [2020-08-18 12:16:22,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:22,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:22,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:22,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:22,707 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-08-18 12:16:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:22,881 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-08-18 12:16:22,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:22,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-18 12:16:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:22,882 INFO L225 Difference]: With dead ends: 72 [2020-08-18 12:16:22,882 INFO L226 Difference]: Without dead ends: 70 [2020-08-18 12:16:22,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-18 12:16:22,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-08-18 12:16:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-18 12:16:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-08-18 12:16:22,887 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2020-08-18 12:16:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:22,887 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-08-18 12:16:22,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:22,887 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-08-18 12:16:22,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 12:16:22,888 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:22,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:22,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:16:22,889 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:22,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:22,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1069819786, now seen corresponding path program 1 times [2020-08-18 12:16:22,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:22,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077477524] [2020-08-18 12:16:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:22,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077477524] [2020-08-18 12:16:22,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:22,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:22,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990598608] [2020-08-18 12:16:22,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:22,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:22,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:22,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:22,937 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-08-18 12:16:23,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:23,080 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-08-18 12:16:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:23,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-18 12:16:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:23,081 INFO L225 Difference]: With dead ends: 53 [2020-08-18 12:16:23,081 INFO L226 Difference]: Without dead ends: 51 [2020-08-18 12:16:23,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:23,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-18 12:16:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-08-18 12:16:23,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-18 12:16:23,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-08-18 12:16:23,087 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 17 [2020-08-18 12:16:23,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:23,089 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-08-18 12:16:23,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:23,089 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-08-18 12:16:23,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 12:16:23,091 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:23,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:23,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 12:16:23,091 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:23,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:23,092 INFO L82 PathProgramCache]: Analyzing trace with hash -726143538, now seen corresponding path program 1 times [2020-08-18 12:16:23,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:23,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542870710] [2020-08-18 12:16:23,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:23,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542870710] [2020-08-18 12:16:23,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:23,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:16:23,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108150130] [2020-08-18 12:16:23,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:16:23,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:23,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:16:23,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:16:23,221 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-08-18 12:16:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:23,351 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-08-18 12:16:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:16:23,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-18 12:16:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:23,352 INFO L225 Difference]: With dead ends: 50 [2020-08-18 12:16:23,352 INFO L226 Difference]: Without dead ends: 48 [2020-08-18 12:16:23,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:16:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-18 12:16:23,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-08-18 12:16:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-18 12:16:23,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-08-18 12:16:23,357 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 18 [2020-08-18 12:16:23,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:23,358 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-08-18 12:16:23,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:16:23,358 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-08-18 12:16:23,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 12:16:23,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:23,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:23,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 12:16:23,359 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:23,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:23,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1148978332, now seen corresponding path program 1 times [2020-08-18 12:16:23,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:23,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294520895] [2020-08-18 12:16:23,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:23,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294520895] [2020-08-18 12:16:23,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:23,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:23,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630228155] [2020-08-18 12:16:23,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:23,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:23,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:23,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:23,425 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2020-08-18 12:16:23,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:23,586 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-08-18 12:16:23,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:16:23,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 12:16:23,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:23,588 INFO L225 Difference]: With dead ends: 69 [2020-08-18 12:16:23,588 INFO L226 Difference]: Without dead ends: 67 [2020-08-18 12:16:23,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:16:23,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-18 12:16:23,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2020-08-18 12:16:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 12:16:23,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-08-18 12:16:23,596 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-08-18 12:16:23,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:23,596 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-08-18 12:16:23,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:23,597 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-08-18 12:16:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 12:16:23,597 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:23,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:23,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 12:16:23,598 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:23,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:23,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1147612912, now seen corresponding path program 1 times [2020-08-18 12:16:23,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:23,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565133291] [2020-08-18 12:16:23,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:23,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565133291] [2020-08-18 12:16:23,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:23,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:23,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611015083] [2020-08-18 12:16:23,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:23,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:23,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:23,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:23,658 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-08-18 12:16:23,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:23,818 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-08-18 12:16:23,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:16:23,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 12:16:23,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:23,819 INFO L225 Difference]: With dead ends: 57 [2020-08-18 12:16:23,819 INFO L226 Difference]: Without dead ends: 55 [2020-08-18 12:16:23,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:16:23,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-18 12:16:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2020-08-18 12:16:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-18 12:16:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-08-18 12:16:23,823 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 18 [2020-08-18 12:16:23,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:23,824 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-08-18 12:16:23,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:23,824 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-08-18 12:16:23,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 12:16:23,824 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:23,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:23,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 12:16:23,825 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:23,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:23,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1195328162, now seen corresponding path program 1 times [2020-08-18 12:16:23,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:23,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206752273] [2020-08-18 12:16:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:23,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206752273] [2020-08-18 12:16:23,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:23,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:23,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340084012] [2020-08-18 12:16:23,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:23,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:23,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:23,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:23,885 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-08-18 12:16:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:24,009 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-08-18 12:16:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:16:24,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-18 12:16:24,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:24,010 INFO L225 Difference]: With dead ends: 41 [2020-08-18 12:16:24,011 INFO L226 Difference]: Without dead ends: 37 [2020-08-18 12:16:24,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:16:24,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-18 12:16:24,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-18 12:16:24,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-18 12:16:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-18 12:16:24,014 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-08-18 12:16:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:24,015 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-18 12:16:24,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-18 12:16:24,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 12:16:24,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:24,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:24,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 12:16:24,016 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:24,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:24,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1258593065, now seen corresponding path program 1 times [2020-08-18 12:16:24,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:24,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836143658] [2020-08-18 12:16:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:24,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836143658] [2020-08-18 12:16:24,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:24,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:16:24,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909549786] [2020-08-18 12:16:24,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:16:24,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:24,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:16:24,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:16:24,086 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-08-18 12:16:24,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:24,259 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-08-18 12:16:24,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 12:16:24,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-18 12:16:24,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:24,261 INFO L225 Difference]: With dead ends: 52 [2020-08-18 12:16:24,261 INFO L226 Difference]: Without dead ends: 50 [2020-08-18 12:16:24,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:16:24,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-18 12:16:24,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2020-08-18 12:16:24,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-18 12:16:24,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-18 12:16:24,265 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2020-08-18 12:16:24,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:24,265 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-18 12:16:24,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:16:24,266 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-18 12:16:24,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 12:16:24,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:24,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:24,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 12:16:24,267 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:24,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:24,267 INFO L82 PathProgramCache]: Analyzing trace with hash -950489901, now seen corresponding path program 1 times [2020-08-18 12:16:24,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:24,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604586300] [2020-08-18 12:16:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:24,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604586300] [2020-08-18 12:16:24,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:24,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:16:24,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455295260] [2020-08-18 12:16:24,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:16:24,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:24,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:16:24,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:16:24,313 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-18 12:16:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:24,392 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-08-18 12:16:24,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:16:24,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-18 12:16:24,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:24,393 INFO L225 Difference]: With dead ends: 35 [2020-08-18 12:16:24,393 INFO L226 Difference]: Without dead ends: 33 [2020-08-18 12:16:24,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:16:24,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-18 12:16:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-18 12:16:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-18 12:16:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-18 12:16:24,398 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-08-18 12:16:24,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:24,398 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-18 12:16:24,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:16:24,399 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-18 12:16:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 12:16:24,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:16:24,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:16:24,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 12:16:24,400 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:16:24,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:16:24,401 INFO L82 PathProgramCache]: Analyzing trace with hash 599587266, now seen corresponding path program 1 times [2020-08-18 12:16:24,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:16:24,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225509742] [2020-08-18 12:16:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:16:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:16:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:16:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:16:24,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225509742] [2020-08-18 12:16:24,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:16:24,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:16:24,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074146464] [2020-08-18 12:16:24,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:16:24,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:16:24,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:16:24,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:16:24,441 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-08-18 12:16:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:16:24,531 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-18 12:16:24,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:16:24,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-18 12:16:24,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:16:24,532 INFO L225 Difference]: With dead ends: 37 [2020-08-18 12:16:24,532 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 12:16:24,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:16:24,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 12:16:24,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 12:16:24,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 12:16:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 12:16:24,534 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-18 12:16:24,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:16:24,535 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 12:16:24,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:16:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 12:16:24,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 12:16:24,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 12:16:24,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 12:16:24,837 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 12:16:24,837 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_383_0~0 |old(~__tmp_383_0~0)|) (= ~__tmp_247_0~0 |old(~__tmp_247_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_305~0 |old(~__return_305~0)|)) [2020-08-18 12:16:24,838 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 12:16:24,838 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 12:16:24,838 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 12:16:24,838 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 12:16:24,838 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 12:16:24,838 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-18 12:16:24,838 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-18 12:16:24,839 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-18 12:16:24,839 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-18 12:16:24,839 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-08-18 12:16:24,839 INFO L268 CegarLoopResult]: For program point L349(line 349) no Hoare annotation was computed. [2020-08-18 12:16:24,839 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 373) no Hoare annotation was computed. [2020-08-18 12:16:24,839 INFO L268 CegarLoopResult]: For program point L151(lines 151 159) no Hoare annotation was computed. [2020-08-18 12:16:24,839 INFO L268 CegarLoopResult]: For program point L52(lines 52 252) no Hoare annotation was computed. [2020-08-18 12:16:24,839 INFO L268 CegarLoopResult]: For program point L308(line 308) no Hoare annotation was computed. [2020-08-18 12:16:24,840 INFO L268 CegarLoopResult]: For program point L275(lines 275 362) no Hoare annotation was computed. [2020-08-18 12:16:24,840 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 235) no Hoare annotation was computed. [2020-08-18 12:16:24,840 INFO L268 CegarLoopResult]: For program point L69(lines 69 93) no Hoare annotation was computed. [2020-08-18 12:16:24,840 INFO L268 CegarLoopResult]: For program point L185(lines 185 195) no Hoare annotation was computed. [2020-08-18 12:16:24,841 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 141) no Hoare annotation was computed. [2020-08-18 12:16:24,841 INFO L268 CegarLoopResult]: For program point L111(lines 111 202) no Hoare annotation was computed. [2020-08-18 12:16:24,841 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2020-08-18 12:16:24,841 INFO L268 CegarLoopResult]: For program point L235(line 235) no Hoare annotation was computed. [2020-08-18 12:16:24,842 INFO L264 CegarLoopResult]: At program point L326(lines 30 366) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (<= 0 main_~main__t~0)) [2020-08-18 12:16:24,843 INFO L264 CegarLoopResult]: At program point L194(lines 58 252) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-08-18 12:16:24,843 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-08-18 12:16:24,843 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2020-08-18 12:16:24,843 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-08-18 12:16:24,843 INFO L268 CegarLoopResult]: For program point L277(line 277) no Hoare annotation was computed. [2020-08-18 12:16:24,843 INFO L268 CegarLoopResult]: For program point L335(lines 335 358) no Hoare annotation was computed. [2020-08-18 12:16:24,843 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 373) no Hoare annotation was computed. [2020-08-18 12:16:24,843 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2020-08-18 12:16:24,844 INFO L268 CegarLoopResult]: For program point L104(lines 104 208) no Hoare annotation was computed. [2020-08-18 12:16:24,844 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-08-18 12:16:24,844 INFO L268 CegarLoopResult]: For program point L294(lines 294 316) no Hoare annotation was computed. [2020-08-18 12:16:24,844 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-08-18 12:16:24,845 INFO L268 CegarLoopResult]: For program point L30(lines 30 366) no Hoare annotation was computed. [2020-08-18 12:16:24,845 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 13 373) the Hoare annotation is: (and (= |old(~__tmp_247_0~0)| ~__tmp_247_0~0) (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0)) [2020-08-18 12:16:24,845 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-08-18 12:16:24,845 INFO L268 CegarLoopResult]: For program point L22(lines 22 367) no Hoare annotation was computed. [2020-08-18 12:16:24,845 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-08-18 12:16:24,846 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-08-18 12:16:24,846 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 349) no Hoare annotation was computed. [2020-08-18 12:16:24,846 INFO L268 CegarLoopResult]: For program point L287(lines 287 361) no Hoare annotation was computed. [2020-08-18 12:16:24,846 INFO L268 CegarLoopResult]: For program point L221(lines 221 243) no Hoare annotation was computed. [2020-08-18 12:16:24,846 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 153) no Hoare annotation was computed. [2020-08-18 12:16:24,846 INFO L268 CegarLoopResult]: For program point L81(lines 81 91) no Hoare annotation was computed. [2020-08-18 12:16:24,846 INFO L268 CegarLoopResult]: For program point L337(line 337) no Hoare annotation was computed. [2020-08-18 12:16:24,846 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 337) no Hoare annotation was computed. [2020-08-18 12:16:24,846 INFO L268 CegarLoopResult]: For program point L139(lines 139 161) no Hoare annotation was computed. [2020-08-18 12:16:24,847 INFO L268 CegarLoopResult]: For program point L40(lines 40 254) no Hoare annotation was computed. [2020-08-18 12:16:24,847 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-08-18 12:16:24,847 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-08-18 12:16:24,847 INFO L268 CegarLoopResult]: For program point L123(lines 123 200) no Hoare annotation was computed. [2020-08-18 12:16:24,847 INFO L271 CegarLoopResult]: At program point L313(lines 30 366) the Hoare annotation is: true [2020-08-18 12:16:24,847 INFO L268 CegarLoopResult]: For program point L214(lines 214 249) no Hoare annotation was computed. [2020-08-18 12:16:24,847 INFO L268 CegarLoopResult]: For program point L173(lines 173 197) no Hoare annotation was computed. [2020-08-18 12:16:24,847 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2020-08-18 12:16:24,848 INFO L268 CegarLoopResult]: For program point L264(lines 264 364) no Hoare annotation was computed. [2020-08-18 12:16:24,848 INFO L268 CegarLoopResult]: For program point L132(lines 132 199) no Hoare annotation was computed. [2020-08-18 12:16:24,848 INFO L264 CegarLoopResult]: At program point L355(lines 281 362) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~13 0)) (<= 0 main_~main__t~0)) [2020-08-18 12:16:24,848 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2020-08-18 12:16:24,848 INFO L268 CegarLoopResult]: For program point L223(line 223) no Hoare annotation was computed. [2020-08-18 12:16:24,849 INFO L268 CegarLoopResult]: For program point L347(lines 347 356) no Hoare annotation was computed. [2020-08-18 12:16:24,849 INFO L264 CegarLoopResult]: At program point L248(lines 100 250) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-08-18 12:16:24,849 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-18 12:16:24,849 INFO L268 CegarLoopResult]: For program point L306(lines 306 314) no Hoare annotation was computed. [2020-08-18 12:16:24,849 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-08-18 12:16:24,849 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-08-18 12:16:24,849 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-08-18 12:16:24,849 INFO L268 CegarLoopResult]: For program point L100(lines 100 250) no Hoare annotation was computed. [2020-08-18 12:16:24,850 INFO L268 CegarLoopResult]: For program point L323(lines 323 360) no Hoare annotation was computed. [2020-08-18 12:16:24,850 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2020-08-18 12:16:24,850 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-08-18 12:16:24,850 INFO L268 CegarLoopResult]: For program point L18(lines 18 372) no Hoare annotation was computed. [2020-08-18 12:16:24,850 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 277) no Hoare annotation was computed. [2020-08-18 12:16:24,850 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-08-18 12:16:24,850 INFO L268 CegarLoopResult]: For program point L233(lines 233 241) no Hoare annotation was computed. [2020-08-18 12:16:24,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:16:24 BoogieIcfgContainer [2020-08-18 12:16:24,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:16:24,881 INFO L168 Benchmark]: Toolchain (without parser) took 6382.56 ms. Allocated memory was 138.9 MB in the beginning and 285.7 MB in the end (delta: 146.8 MB). Free memory was 102.0 MB in the beginning and 208.5 MB in the end (delta: -106.5 MB). Peak memory consumption was 154.3 MB. Max. memory is 7.1 GB. [2020-08-18 12:16:24,883 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 12:16:24,888 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.30 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 89.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-18 12:16:24,889 INFO L168 Benchmark]: Boogie Preprocessor took 144.81 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 89.0 MB in the beginning and 177.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-18 12:16:24,893 INFO L168 Benchmark]: RCFGBuilder took 521.15 ms. Allocated memory is still 200.8 MB. Free memory was 177.6 MB in the beginning and 152.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-08-18 12:16:24,894 INFO L168 Benchmark]: TraceAbstraction took 5347.23 ms. Allocated memory was 200.8 MB in the beginning and 285.7 MB in the end (delta: 84.9 MB). Free memory was 152.0 MB in the beginning and 208.5 MB in the end (delta: -56.4 MB). Peak memory consumption was 142.5 MB. Max. memory is 7.1 GB. [2020-08-18 12:16:24,900 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.30 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 89.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.81 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 89.0 MB in the beginning and 177.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 521.15 ms. Allocated memory is still 200.8 MB. Free memory was 177.6 MB in the beginning and 152.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5347.23 ms. Allocated memory was 200.8 MB in the beginning and 285.7 MB in the end (delta: 84.9 MB). Free memory was 152.0 MB in the beginning and 208.5 MB in the end (delta: -56.4 MB). Peak memory consumption was 142.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 337]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 349]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 153]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 296]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 187]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 223]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 308]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 277]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 113]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 235]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 71]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 141]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 125]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 83]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 54]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: main__t < main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) && main__t < main__tagbuf_len + 1) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 281]: Loop Invariant Derived loop invariant: (main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 0 <= main__t - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 80 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 802 SDtfs, 1459 SDslu, 821 SDs, 0 SdLazy, 2124 SolverSat, 146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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, 18 MinimizatonAttempts, 209 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 76 HoareAnnotationTreeSize, 9 FomulaSimplifications, 50568 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1351 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 280 ConstructedInterpolants, 0 QuantifiedInterpolants, 13380 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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...