/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -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 [2020-08-19 01:16:51,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:16:51,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:16:51,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:16:51,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:16:51,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:16:51,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:16:51,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:16:51,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:16:51,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:16:51,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:16:51,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:16:51,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:16:51,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:16:51,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:16:51,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:16:51,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:16:51,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:16:51,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:16:51,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:16:51,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:16:51,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:16:51,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:16:51,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:16:51,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:16:51,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:16:51,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:16:51,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:16:51,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:16:51,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:16:51,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:16:51,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:16:51,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:16:51,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:16:51,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:16:51,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:16:51,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:16:51,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:16:51,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:16:51,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:16:51,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:16:51,551 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 [2020-08-19 01:16:51,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:16:51,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:16:51,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:16:51,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:16:51,594 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:16:51,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:16:51,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:16:51,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:16:51,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:16:51,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:16:51,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:16:51,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:16:51,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:16:51,597 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:16:51,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:16:51,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:16:51,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:16:51,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:16:51,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:16:51,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:16:51,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:16:51,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:16:51,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:16:51,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:16:51,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:16:51,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:16:51,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:16:51,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:16:51,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:16:51,600 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=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:16:51,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:16:51,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:16:51,906 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:16:51,908 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:16:51,908 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:16:51,909 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-19 01:16:51,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ccd8cf98/fa99aebd0dcd48e2a8ddea0e00fef46e/FLAG5b20a6a8d [2020-08-19 01:16:52,451 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:16:52,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-19 01:16:52,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ccd8cf98/fa99aebd0dcd48e2a8ddea0e00fef46e/FLAG5b20a6a8d [2020-08-19 01:16:52,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ccd8cf98/fa99aebd0dcd48e2a8ddea0e00fef46e [2020-08-19 01:16:52,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:16:52,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:16:52,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:16:52,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:16:52,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:16:52,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:16:52" (1/1) ... [2020-08-19 01:16:52,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2866fd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:52, skipping insertion in model container [2020-08-19 01:16:52,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:16:52" (1/1) ... [2020-08-19 01:16:52,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:16:52,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:16:53,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:16:53,234 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:16:53,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:16:53,406 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:16:53,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:53 WrapperNode [2020-08-19 01:16:53,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:16:53,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:16:53,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:16:53,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:16:53,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:53" (1/1) ... [2020-08-19 01:16:53,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:53" (1/1) ... [2020-08-19 01:16:53,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:53" (1/1) ... [2020-08-19 01:16:53,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:53" (1/1) ... [2020-08-19 01:16:53,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:53" (1/1) ... [2020-08-19 01:16:53,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:53" (1/1) ... [2020-08-19 01:16:53,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:53" (1/1) ... [2020-08-19 01:16:53,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:16:53,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:16:53,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:16:53,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:16:53,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:53" (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 [2020-08-19 01:16:53,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:16:53,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:16:53,516 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 01:16:53,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:16:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:16:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 01:16:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 01:16:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 01:16:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:16:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:16:53,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:16:53,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:16:53,936 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:16:53,937 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 01:16:53,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:16:53 BoogieIcfgContainer [2020-08-19 01:16:53,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:16:53,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:16:53,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:16:53,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:16:53,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:16:52" (1/3) ... [2020-08-19 01:16:53,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b183b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:16:53, skipping insertion in model container [2020-08-19 01:16:53,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:16:53" (2/3) ... [2020-08-19 01:16:53,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b183b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:16:53, skipping insertion in model container [2020-08-19 01:16:53,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:16:53" (3/3) ... [2020-08-19 01:16:53,955 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-08-19 01:16:53,967 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:16:53,974 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-08-19 01:16:53,990 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-08-19 01:16:54,031 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:16:54,032 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:16:54,035 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:16:54,035 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:16:54,037 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:16:54,037 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:16:54,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:16:54,038 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:16:54,079 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-08-19 01:16:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 01:16:54,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:54,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:54,086 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]=== [2020-08-19 01:16:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:54,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1093455773, now seen corresponding path program 1 times [2020-08-19 01:16:54,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:54,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889611382] [2020-08-19 01:16:54,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:54,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:54,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889611382] [2020-08-19 01:16:54,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:54,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:16:54,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278877973] [2020-08-19 01:16:54,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:16:54,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:54,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:16:54,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:16:54,441 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-08-19 01:16:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:54,930 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2020-08-19 01:16:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:16:54,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-08-19 01:16:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:54,945 INFO L225 Difference]: With dead ends: 137 [2020-08-19 01:16:54,945 INFO L226 Difference]: Without dead ends: 113 [2020-08-19 01:16:54,949 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 [2020-08-19 01:16:54,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-19 01:16:54,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2020-08-19 01:16:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-19 01:16:55,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-08-19 01:16:55,002 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 12 [2020-08-19 01:16:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:55,003 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-08-19 01:16:55,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:16:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-08-19 01:16:55,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 01:16:55,004 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:55,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:55,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:16:55,005 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]=== [2020-08-19 01:16:55,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:55,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1096690079, now seen corresponding path program 1 times [2020-08-19 01:16:55,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:55,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509844857] [2020-08-19 01:16:55,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:55,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:55,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509844857] [2020-08-19 01:16:55,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:55,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:16:55,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478343426] [2020-08-19 01:16:55,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:16:55,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:55,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:16:55,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:16:55,087 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 5 states. [2020-08-19 01:16:55,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:55,266 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-19 01:16:55,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:16:55,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-19 01:16:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:55,271 INFO L225 Difference]: With dead ends: 69 [2020-08-19 01:16:55,271 INFO L226 Difference]: Without dead ends: 67 [2020-08-19 01:16:55,273 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 [2020-08-19 01:16:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-19 01:16:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-08-19 01:16:55,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-19 01:16:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-08-19 01:16:55,291 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 12 [2020-08-19 01:16:55,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:55,292 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-08-19 01:16:55,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:16:55,293 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-08-19 01:16:55,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 01:16:55,294 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:55,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:55,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:16:55,298 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]=== [2020-08-19 01:16:55,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:55,299 INFO L82 PathProgramCache]: Analyzing trace with hash 362348992, now seen corresponding path program 1 times [2020-08-19 01:16:55,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:55,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142390007] [2020-08-19 01:16:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:55,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:55,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142390007] [2020-08-19 01:16:55,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:55,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:16:55,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255400411] [2020-08-19 01:16:55,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:16:55,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:55,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:16:55,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:16:55,411 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-08-19 01:16:55,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:55,575 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-08-19 01:16:55,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:16:55,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-19 01:16:55,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:55,577 INFO L225 Difference]: With dead ends: 73 [2020-08-19 01:16:55,577 INFO L226 Difference]: Without dead ends: 71 [2020-08-19 01:16:55,578 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 [2020-08-19 01:16:55,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-08-19 01:16:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-08-19 01:16:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-19 01:16:55,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-08-19 01:16:55,590 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 13 [2020-08-19 01:16:55,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:55,591 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-08-19 01:16:55,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:16:55,591 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-08-19 01:16:55,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 01:16:55,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:55,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:55,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:16:55,595 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]=== [2020-08-19 01:16:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:55,595 INFO L82 PathProgramCache]: Analyzing trace with hash -2105928756, now seen corresponding path program 1 times [2020-08-19 01:16:55,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:55,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488492077] [2020-08-19 01:16:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:55,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:55,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:55,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488492077] [2020-08-19 01:16:55,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:55,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:16:55,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262533901] [2020-08-19 01:16:55,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:16:55,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:55,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:16:55,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:16:55,695 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 6 states. [2020-08-19 01:16:55,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:55,880 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-08-19 01:16:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:16:55,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-19 01:16:55,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:55,882 INFO L225 Difference]: With dead ends: 71 [2020-08-19 01:16:55,883 INFO L226 Difference]: Without dead ends: 69 [2020-08-19 01:16:55,883 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 [2020-08-19 01:16:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-19 01:16:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-08-19 01:16:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-19 01:16:55,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-08-19 01:16:55,892 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2020-08-19 01:16:55,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:55,893 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-08-19 01:16:55,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:16:55,893 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-08-19 01:16:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 01:16:55,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:55,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:55,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:16:55,895 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]=== [2020-08-19 01:16:55,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:55,895 INFO L82 PathProgramCache]: Analyzing trace with hash 325126884, now seen corresponding path program 1 times [2020-08-19 01:16:55,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:55,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957090474] [2020-08-19 01:16:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:55,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:55,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957090474] [2020-08-19 01:16:55,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:55,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:16:55,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095288751] [2020-08-19 01:16:55,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:16:55,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:55,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:16:55,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:16:55,981 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 6 states. [2020-08-19 01:16:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:56,161 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-19 01:16:56,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:16:56,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-19 01:16:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:56,163 INFO L225 Difference]: With dead ends: 69 [2020-08-19 01:16:56,163 INFO L226 Difference]: Without dead ends: 67 [2020-08-19 01:16:56,166 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 [2020-08-19 01:16:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-19 01:16:56,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-08-19 01:16:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-19 01:16:56,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-08-19 01:16:56,180 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 15 [2020-08-19 01:16:56,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:56,180 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-08-19 01:16:56,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:16:56,180 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-08-19 01:16:56,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:16:56,184 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:56,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:56,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:16:56,185 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]=== [2020-08-19 01:16:56,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:56,185 INFO L82 PathProgramCache]: Analyzing trace with hash -858848822, now seen corresponding path program 1 times [2020-08-19 01:16:56,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:56,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651381574] [2020-08-19 01:16:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:56,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:56,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651381574] [2020-08-19 01:16:56,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:56,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:16:56,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916621848] [2020-08-19 01:16:56,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:16:56,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:56,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:16:56,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:16:56,333 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-08-19 01:16:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:56,585 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-08-19 01:16:56,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:16:56,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-19 01:16:56,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:56,587 INFO L225 Difference]: With dead ends: 112 [2020-08-19 01:16:56,587 INFO L226 Difference]: Without dead ends: 110 [2020-08-19 01:16:56,588 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 [2020-08-19 01:16:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-19 01:16:56,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 64. [2020-08-19 01:16:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-19 01:16:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-08-19 01:16:56,599 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 16 [2020-08-19 01:16:56,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:56,600 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-08-19 01:16:56,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:16:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-08-19 01:16:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:16:56,601 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:56,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:56,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:16:56,601 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]=== [2020-08-19 01:16:56,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:56,605 INFO L82 PathProgramCache]: Analyzing trace with hash -859278805, now seen corresponding path program 1 times [2020-08-19 01:16:56,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:56,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680341858] [2020-08-19 01:16:56,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:56,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:56,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680341858] [2020-08-19 01:16:56,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:56,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:16:56,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720767268] [2020-08-19 01:16:56,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:16:56,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:56,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:16:56,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:16:56,654 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-08-19 01:16:56,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:56,798 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-08-19 01:16:56,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:16:56,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-19 01:16:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:56,800 INFO L225 Difference]: With dead ends: 65 [2020-08-19 01:16:56,801 INFO L226 Difference]: Without dead ends: 61 [2020-08-19 01:16:56,801 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 [2020-08-19 01:16:56,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-19 01:16:56,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-19 01:16:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-19 01:16:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-08-19 01:16:56,810 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 16 [2020-08-19 01:16:56,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:56,811 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-08-19 01:16:56,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:16:56,811 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-08-19 01:16:56,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:16:56,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:56,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:56,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:16:56,812 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]=== [2020-08-19 01:16:56,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:56,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1489001901, now seen corresponding path program 1 times [2020-08-19 01:16:56,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:56,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22180009] [2020-08-19 01:16:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:56,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:56,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:56,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22180009] [2020-08-19 01:16:56,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:56,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:16:56,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100129384] [2020-08-19 01:16:56,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:16:56,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:56,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:16:56,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:16:56,863 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 5 states. [2020-08-19 01:16:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:56,981 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-08-19 01:16:56,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:16:56,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-19 01:16:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:56,984 INFO L225 Difference]: With dead ends: 61 [2020-08-19 01:16:56,985 INFO L226 Difference]: Without dead ends: 57 [2020-08-19 01:16:56,986 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 [2020-08-19 01:16:56,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-19 01:16:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-08-19 01:16:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-19 01:16:56,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-08-19 01:16:56,991 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2020-08-19 01:16:56,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:56,992 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-08-19 01:16:56,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:16:56,992 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-08-19 01:16:56,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:16:56,993 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:56,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:56,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:16:56,994 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]=== [2020-08-19 01:16:56,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:56,995 INFO L82 PathProgramCache]: Analyzing trace with hash -854506496, now seen corresponding path program 1 times [2020-08-19 01:16:56,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:56,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498853763] [2020-08-19 01:16:56,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:57,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:57,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498853763] [2020-08-19 01:16:57,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:57,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:16:57,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240514363] [2020-08-19 01:16:57,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:16:57,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:57,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:16:57,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:16:57,133 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-08-19 01:16:57,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:57,392 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-08-19 01:16:57,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:16:57,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-08-19 01:16:57,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:57,394 INFO L225 Difference]: With dead ends: 95 [2020-08-19 01:16:57,394 INFO L226 Difference]: Without dead ends: 93 [2020-08-19 01:16:57,395 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 [2020-08-19 01:16:57,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-19 01:16:57,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2020-08-19 01:16:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-19 01:16:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-08-19 01:16:57,401 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 17 [2020-08-19 01:16:57,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:57,401 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-08-19 01:16:57,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:16:57,401 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-08-19 01:16:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:16:57,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:57,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:57,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:16:57,403 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]=== [2020-08-19 01:16:57,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:57,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1071358986, now seen corresponding path program 1 times [2020-08-19 01:16:57,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:57,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808377115] [2020-08-19 01:16:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:57,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:57,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808377115] [2020-08-19 01:16:57,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:57,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:16:57,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196812132] [2020-08-19 01:16:57,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:16:57,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:57,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:16:57,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:16:57,470 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-08-19 01:16:57,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:57,641 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-08-19 01:16:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:16:57,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-19 01:16:57,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:57,643 INFO L225 Difference]: With dead ends: 72 [2020-08-19 01:16:57,643 INFO L226 Difference]: Without dead ends: 70 [2020-08-19 01:16:57,644 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 [2020-08-19 01:16:57,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-19 01:16:57,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-08-19 01:16:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-19 01:16:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-08-19 01:16:57,655 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2020-08-19 01:16:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:57,655 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-08-19 01:16:57,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:16:57,655 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-08-19 01:16:57,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:16:57,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:57,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:57,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:16:57,657 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]=== [2020-08-19 01:16:57,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:57,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1069819786, now seen corresponding path program 1 times [2020-08-19 01:16:57,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:57,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761074430] [2020-08-19 01:16:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:57,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:57,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761074430] [2020-08-19 01:16:57,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:57,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:16:57,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367341512] [2020-08-19 01:16:57,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:16:57,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:57,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:16:57,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:16:57,736 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-08-19 01:16:57,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:57,870 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-08-19 01:16:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:16:57,871 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-19 01:16:57,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:57,872 INFO L225 Difference]: With dead ends: 53 [2020-08-19 01:16:57,872 INFO L226 Difference]: Without dead ends: 51 [2020-08-19 01:16:57,872 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 [2020-08-19 01:16:57,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-19 01:16:57,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-08-19 01:16:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-19 01:16:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-08-19 01:16:57,877 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 17 [2020-08-19 01:16:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:57,877 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-08-19 01:16:57,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:16:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-08-19 01:16:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:16:57,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:57,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:57,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:16:57,879 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]=== [2020-08-19 01:16:57,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:57,879 INFO L82 PathProgramCache]: Analyzing trace with hash -726143538, now seen corresponding path program 1 times [2020-08-19 01:16:57,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:57,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059859337] [2020-08-19 01:16:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:57,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:57,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059859337] [2020-08-19 01:16:57,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:57,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:16:57,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635220339] [2020-08-19 01:16:57,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:16:57,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:57,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:16:57,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:16:57,978 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-08-19 01:16:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:58,133 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-08-19 01:16:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:16:58,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-19 01:16:58,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:58,134 INFO L225 Difference]: With dead ends: 50 [2020-08-19 01:16:58,135 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 01:16:58,135 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 [2020-08-19 01:16:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 01:16:58,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-08-19 01:16:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-19 01:16:58,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-08-19 01:16:58,139 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 18 [2020-08-19 01:16:58,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:58,140 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-08-19 01:16:58,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:16:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-08-19 01:16:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:16:58,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:58,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:58,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:16:58,141 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]=== [2020-08-19 01:16:58,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:58,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1148978332, now seen corresponding path program 1 times [2020-08-19 01:16:58,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:58,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540705927] [2020-08-19 01:16:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:58,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:58,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540705927] [2020-08-19 01:16:58,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:58,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:16:58,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637769189] [2020-08-19 01:16:58,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:16:58,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:58,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:16:58,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:16:58,206 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2020-08-19 01:16:58,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:58,368 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-08-19 01:16:58,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:16:58,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-19 01:16:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:58,371 INFO L225 Difference]: With dead ends: 69 [2020-08-19 01:16:58,371 INFO L226 Difference]: Without dead ends: 67 [2020-08-19 01:16:58,371 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 [2020-08-19 01:16:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-19 01:16:58,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2020-08-19 01:16:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 01:16:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-08-19 01:16:58,378 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-08-19 01:16:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:58,378 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-08-19 01:16:58,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:16:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-08-19 01:16:58,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:16:58,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:58,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:58,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 01:16:58,380 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]=== [2020-08-19 01:16:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:58,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1147612912, now seen corresponding path program 1 times [2020-08-19 01:16:58,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:58,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473318555] [2020-08-19 01:16:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:58,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:58,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473318555] [2020-08-19 01:16:58,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:58,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:16:58,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588956606] [2020-08-19 01:16:58,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:16:58,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:58,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:16:58,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:16:58,503 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-08-19 01:16:58,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:58,648 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-08-19 01:16:58,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:16:58,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-19 01:16:58,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:58,649 INFO L225 Difference]: With dead ends: 57 [2020-08-19 01:16:58,649 INFO L226 Difference]: Without dead ends: 55 [2020-08-19 01:16:58,650 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 [2020-08-19 01:16:58,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-19 01:16:58,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2020-08-19 01:16:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-19 01:16:58,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-08-19 01:16:58,655 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 18 [2020-08-19 01:16:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:58,656 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-08-19 01:16:58,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:16:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-08-19 01:16:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:16:58,658 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:58,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:58,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 01:16:58,659 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]=== [2020-08-19 01:16:58,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:58,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1195328162, now seen corresponding path program 1 times [2020-08-19 01:16:58,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:58,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123853423] [2020-08-19 01:16:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:58,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:58,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123853423] [2020-08-19 01:16:58,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:58,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:16:58,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985962951] [2020-08-19 01:16:58,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:16:58,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:58,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:16:58,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:16:58,761 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-08-19 01:16:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:58,878 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-08-19 01:16:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:16:58,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-19 01:16:58,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:58,879 INFO L225 Difference]: With dead ends: 41 [2020-08-19 01:16:58,879 INFO L226 Difference]: Without dead ends: 37 [2020-08-19 01:16:58,880 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 [2020-08-19 01:16:58,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-19 01:16:58,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-19 01:16:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-19 01:16:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-19 01:16:58,883 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-08-19 01:16:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:58,884 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-19 01:16:58,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:16:58,884 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-19 01:16:58,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:16:58,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:58,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:16:58,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 01:16:58,885 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]=== [2020-08-19 01:16:58,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:58,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1258593065, now seen corresponding path program 1 times [2020-08-19 01:16:58,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:58,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476636846] [2020-08-19 01:16:58,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:58,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:58,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476636846] [2020-08-19 01:16:58,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:58,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:16:58,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171257992] [2020-08-19 01:16:58,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:16:58,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:58,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:16:58,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:16:58,954 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-08-19 01:16:59,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:59,103 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-08-19 01:16:59,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:16:59,103 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-19 01:16:59,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:59,104 INFO L225 Difference]: With dead ends: 52 [2020-08-19 01:16:59,104 INFO L226 Difference]: Without dead ends: 50 [2020-08-19 01:16:59,105 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 [2020-08-19 01:16:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-19 01:16:59,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2020-08-19 01:16:59,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-19 01:16:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-19 01:16:59,109 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2020-08-19 01:16:59,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:59,109 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-19 01:16:59,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:16:59,109 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-19 01:16:59,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 01:16:59,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:59,110 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] [2020-08-19 01:16:59,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 01:16:59,111 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]=== [2020-08-19 01:16:59,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:59,111 INFO L82 PathProgramCache]: Analyzing trace with hash -950489901, now seen corresponding path program 1 times [2020-08-19 01:16:59,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:59,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867136714] [2020-08-19 01:16:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:59,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:59,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867136714] [2020-08-19 01:16:59,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:59,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:16:59,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694662898] [2020-08-19 01:16:59,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:16:59,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:59,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:16:59,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:16:59,150 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-19 01:16:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:59,251 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-08-19 01:16:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:16:59,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-19 01:16:59,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:59,252 INFO L225 Difference]: With dead ends: 35 [2020-08-19 01:16:59,252 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 01:16:59,253 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 [2020-08-19 01:16:59,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 01:16:59,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-19 01:16:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-19 01:16:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-19 01:16:59,257 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-08-19 01:16:59,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:59,258 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-19 01:16:59,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:16:59,258 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-19 01:16:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 01:16:59,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:16:59,259 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] [2020-08-19 01:16:59,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 01:16:59,259 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]=== [2020-08-19 01:16:59,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:16:59,260 INFO L82 PathProgramCache]: Analyzing trace with hash 599587266, now seen corresponding path program 1 times [2020-08-19 01:16:59,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:16:59,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561674141] [2020-08-19 01:16:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:16:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:59,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:16:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:16:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:16:59,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561674141] [2020-08-19 01:16:59,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:16:59,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:16:59,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167411776] [2020-08-19 01:16:59,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:16:59,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:16:59,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:16:59,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:16:59,308 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-08-19 01:16:59,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:16:59,400 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-19 01:16:59,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:16:59,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-19 01:16:59,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:16:59,401 INFO L225 Difference]: With dead ends: 37 [2020-08-19 01:16:59,401 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:16:59,402 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 [2020-08-19 01:16:59,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:16:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:16:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:16:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:16:59,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-19 01:16:59,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:16:59,403 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:16:59,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:16:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:16:59,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:16:59,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 01:16:59,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:16:59,711 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 01:16:59,711 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)|)) [2020-08-19 01:16:59,712 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:16:59,712 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:16:59,712 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 01:16:59,712 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 01:16:59,712 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 01:16:59,712 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-19 01:16:59,712 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-19 01:16:59,713 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-19 01:16:59,713 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-19 01:16:59,713 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-08-19 01:16:59,713 INFO L268 CegarLoopResult]: For program point L349(line 349) no Hoare annotation was computed. [2020-08-19 01:16:59,713 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 373) no Hoare annotation was computed. [2020-08-19 01:16:59,713 INFO L268 CegarLoopResult]: For program point L151(lines 151 159) no Hoare annotation was computed. [2020-08-19 01:16:59,713 INFO L268 CegarLoopResult]: For program point L52(lines 52 252) no Hoare annotation was computed. [2020-08-19 01:16:59,714 INFO L268 CegarLoopResult]: For program point L308(line 308) no Hoare annotation was computed. [2020-08-19 01:16:59,714 INFO L268 CegarLoopResult]: For program point L275(lines 275 362) no Hoare annotation was computed. [2020-08-19 01:16:59,714 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 235) no Hoare annotation was computed. [2020-08-19 01:16:59,714 INFO L268 CegarLoopResult]: For program point L69(lines 69 93) no Hoare annotation was computed. [2020-08-19 01:16:59,714 INFO L268 CegarLoopResult]: For program point L185(lines 185 195) no Hoare annotation was computed. [2020-08-19 01:16:59,714 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 141) no Hoare annotation was computed. [2020-08-19 01:16:59,714 INFO L268 CegarLoopResult]: For program point L111(lines 111 202) no Hoare annotation was computed. [2020-08-19 01:16:59,715 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2020-08-19 01:16:59,715 INFO L268 CegarLoopResult]: For program point L235(line 235) no Hoare annotation was computed. [2020-08-19 01:16:59,715 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)) [2020-08-19 01:16:59,715 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))) [2020-08-19 01:16:59,715 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-08-19 01:16:59,716 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2020-08-19 01:16:59,716 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-08-19 01:16:59,716 INFO L268 CegarLoopResult]: For program point L277(line 277) no Hoare annotation was computed. [2020-08-19 01:16:59,716 INFO L268 CegarLoopResult]: For program point L335(lines 335 358) no Hoare annotation was computed. [2020-08-19 01:16:59,716 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 373) no Hoare annotation was computed. [2020-08-19 01:16:59,716 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2020-08-19 01:16:59,716 INFO L268 CegarLoopResult]: For program point L104(lines 104 208) no Hoare annotation was computed. [2020-08-19 01:16:59,717 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-08-19 01:16:59,717 INFO L268 CegarLoopResult]: For program point L294(lines 294 316) no Hoare annotation was computed. [2020-08-19 01:16:59,717 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-08-19 01:16:59,717 INFO L268 CegarLoopResult]: For program point L30(lines 30 366) no Hoare annotation was computed. [2020-08-19 01:16:59,717 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)) [2020-08-19 01:16:59,717 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-08-19 01:16:59,718 INFO L268 CegarLoopResult]: For program point L22(lines 22 367) no Hoare annotation was computed. [2020-08-19 01:16:59,718 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-08-19 01:16:59,718 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-08-19 01:16:59,718 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 349) no Hoare annotation was computed. [2020-08-19 01:16:59,718 INFO L268 CegarLoopResult]: For program point L287(lines 287 361) no Hoare annotation was computed. [2020-08-19 01:16:59,718 INFO L268 CegarLoopResult]: For program point L221(lines 221 243) no Hoare annotation was computed. [2020-08-19 01:16:59,718 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 153) no Hoare annotation was computed. [2020-08-19 01:16:59,718 INFO L268 CegarLoopResult]: For program point L81(lines 81 91) no Hoare annotation was computed. [2020-08-19 01:16:59,719 INFO L268 CegarLoopResult]: For program point L337(line 337) no Hoare annotation was computed. [2020-08-19 01:16:59,719 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 337) no Hoare annotation was computed. [2020-08-19 01:16:59,719 INFO L268 CegarLoopResult]: For program point L139(lines 139 161) no Hoare annotation was computed. [2020-08-19 01:16:59,719 INFO L268 CegarLoopResult]: For program point L40(lines 40 254) no Hoare annotation was computed. [2020-08-19 01:16:59,719 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-08-19 01:16:59,719 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-08-19 01:16:59,719 INFO L268 CegarLoopResult]: For program point L123(lines 123 200) no Hoare annotation was computed. [2020-08-19 01:16:59,720 INFO L271 CegarLoopResult]: At program point L313(lines 30 366) the Hoare annotation is: true [2020-08-19 01:16:59,720 INFO L268 CegarLoopResult]: For program point L214(lines 214 249) no Hoare annotation was computed. [2020-08-19 01:16:59,720 INFO L268 CegarLoopResult]: For program point L173(lines 173 197) no Hoare annotation was computed. [2020-08-19 01:16:59,720 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2020-08-19 01:16:59,720 INFO L268 CegarLoopResult]: For program point L264(lines 264 364) no Hoare annotation was computed. [2020-08-19 01:16:59,720 INFO L268 CegarLoopResult]: For program point L132(lines 132 199) no Hoare annotation was computed. [2020-08-19 01:16:59,720 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)) [2020-08-19 01:16:59,721 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2020-08-19 01:16:59,721 INFO L268 CegarLoopResult]: For program point L223(line 223) no Hoare annotation was computed. [2020-08-19 01:16:59,721 INFO L268 CegarLoopResult]: For program point L347(lines 347 356) no Hoare annotation was computed. [2020-08-19 01:16:59,721 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))) [2020-08-19 01:16:59,721 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-19 01:16:59,721 INFO L268 CegarLoopResult]: For program point L306(lines 306 314) no Hoare annotation was computed. [2020-08-19 01:16:59,721 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-08-19 01:16:59,722 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-08-19 01:16:59,722 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-08-19 01:16:59,722 INFO L268 CegarLoopResult]: For program point L100(lines 100 250) no Hoare annotation was computed. [2020-08-19 01:16:59,722 INFO L268 CegarLoopResult]: For program point L323(lines 323 360) no Hoare annotation was computed. [2020-08-19 01:16:59,723 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2020-08-19 01:16:59,723 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-08-19 01:16:59,723 INFO L268 CegarLoopResult]: For program point L18(lines 18 372) no Hoare annotation was computed. [2020-08-19 01:16:59,723 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 277) no Hoare annotation was computed. [2020-08-19 01:16:59,723 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-08-19 01:16:59,724 INFO L268 CegarLoopResult]: For program point L233(lines 233 241) no Hoare annotation was computed. [2020-08-19 01:16:59,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:16:59 BoogieIcfgContainer [2020-08-19 01:16:59,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:16:59,754 INFO L168 Benchmark]: Toolchain (without parser) took 6945.12 ms. Allocated memory was 139.5 MB in the beginning and 281.5 MB in the end (delta: 142.1 MB). Free memory was 102.7 MB in the beginning and 190.9 MB in the end (delta: -88.2 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:16:59,754 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:16:59,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 596.80 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 179.5 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:16:59,756 INFO L168 Benchmark]: Boogie Preprocessor took 41.68 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 177.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:16:59,756 INFO L168 Benchmark]: RCFGBuilder took 494.20 ms. Allocated memory is still 202.4 MB. Free memory was 177.2 MB in the beginning and 152.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:16:59,757 INFO L168 Benchmark]: TraceAbstraction took 5804.02 ms. Allocated memory was 202.4 MB in the beginning and 281.5 MB in the end (delta: 79.2 MB). Free memory was 152.3 MB in the beginning and 190.9 MB in the end (delta: -38.6 MB). Peak memory consumption was 40.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:16:59,760 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 596.80 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 179.5 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.68 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 177.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 494.20 ms. Allocated memory is still 202.4 MB. Free memory was 177.2 MB in the beginning and 152.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5804.02 ms. Allocated memory was 202.4 MB in the beginning and 281.5 MB in the end (delta: 79.2 MB). Free memory was 152.3 MB in the beginning and 190.9 MB in the end (delta: -38.6 MB). Peak memory consumption was 40.5 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: 5.3s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 3.2s, 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, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.1s 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, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1351 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s 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...