/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=1.0 -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 02:53:56,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:53:56,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:53:56,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:53:56,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:53:56,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:53:56,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:53:56,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:53:56,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:53:56,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:53:56,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:53:56,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:53:56,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:53:56,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:53:56,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:53:56,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:53:56,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:53:56,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:53:56,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:53:56,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:53:56,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:53:56,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:53:56,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:53:56,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:53:56,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:53:56,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:53:56,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:53:56,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:53:56,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:53:56,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:53:56,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:53:56,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:53:56,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:53:56,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:53:56,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:53:56,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:53:56,443 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 02:53:56,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:53:56,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:53:56,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:53:56,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:53:56,468 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:53:56,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:53:56,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:53:56,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:53:56,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:53:56,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:53:56,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:53:56,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:53:56,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:53:56,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:53:56,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:53:56,471 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:53:56,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:53:56,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:53:56,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:53:56,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:53:56,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:53:56,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:53:56,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:53:56,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:53:56,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:53:56,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:53:56,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:53:56,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:53:56,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:53:56,474 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=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:53:56,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:53:56,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:53:56,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:53:56,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:53:56,803 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:53:56,803 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-19 02:53:56,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e96c3740e/2afc45f210a94c9aa7c4ecf21f8d471b/FLAGaa3b60db4 [2020-08-19 02:53:57,395 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:53:57,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-08-19 02:53:57,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e96c3740e/2afc45f210a94c9aa7c4ecf21f8d471b/FLAGaa3b60db4 [2020-08-19 02:53:57,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e96c3740e/2afc45f210a94c9aa7c4ecf21f8d471b [2020-08-19 02:53:57,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:53:57,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:53:57,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:53:57,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:53:57,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:53:57,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:53:57" (1/1) ... [2020-08-19 02:53:57,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ddb90c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:57, skipping insertion in model container [2020-08-19 02:53:57,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:53:57" (1/1) ... [2020-08-19 02:53:57,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:53:57,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:53:58,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:53:58,013 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:53:58,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:53:58,070 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:53:58,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:58 WrapperNode [2020-08-19 02:53:58,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:53:58,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:53:58,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:53:58,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:53:58,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:58" (1/1) ... [2020-08-19 02:53:58,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:58" (1/1) ... [2020-08-19 02:53:58,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:58" (1/1) ... [2020-08-19 02:53:58,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:58" (1/1) ... [2020-08-19 02:53:58,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:58" (1/1) ... [2020-08-19 02:53:58,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:58" (1/1) ... [2020-08-19 02:53:58,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:58" (1/1) ... [2020-08-19 02:53:58,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:53:58,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:53:58,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:53:58,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:53:58,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:58" (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 02:53:58,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:53:58,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:53:58,257 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 02:53:58,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:53:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:53:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 02:53:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 02:53:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 02:53:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:53:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:53:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:53:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:53:58,702 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:53:58,702 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 02:53:58,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:53:58 BoogieIcfgContainer [2020-08-19 02:53:58,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:53:58,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:53:58,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:53:58,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:53:58,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:53:57" (1/3) ... [2020-08-19 02:53:58,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6c8dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:53:58, skipping insertion in model container [2020-08-19 02:53:58,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:53:58" (2/3) ... [2020-08-19 02:53:58,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6c8dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:53:58, skipping insertion in model container [2020-08-19 02:53:58,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:53:58" (3/3) ... [2020-08-19 02:53:58,717 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-08-19 02:53:58,728 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:53:58,736 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-08-19 02:53:58,750 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-08-19 02:53:58,776 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:53:58,776 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:53:58,777 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:53:58,777 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:53:58,777 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:53:58,777 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:53:58,778 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:53:58,778 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:53:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-08-19 02:53:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 02:53:58,808 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:53:58,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:53:58,810 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 02:53:58,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:53:58,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1093455773, now seen corresponding path program 1 times [2020-08-19 02:53:58,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:53:58,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582770227] [2020-08-19 02:53:58,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:53:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:59,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:53:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:59,109 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 02:53:59,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582770227] [2020-08-19 02:53:59,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:53:59,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:53:59,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831508344] [2020-08-19 02:53:59,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:53:59,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:53:59,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:53:59,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:53:59,141 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-08-19 02:53:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:53:59,613 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2020-08-19 02:53:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:53:59,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-08-19 02:53:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:53:59,627 INFO L225 Difference]: With dead ends: 137 [2020-08-19 02:53:59,627 INFO L226 Difference]: Without dead ends: 113 [2020-08-19 02:53:59,631 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 02:53:59,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-19 02:53:59,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2020-08-19 02:53:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-19 02:53:59,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-08-19 02:53:59,684 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 12 [2020-08-19 02:53:59,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:53:59,685 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-08-19 02:53:59,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:53:59,685 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-08-19 02:53:59,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 02:53:59,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:53:59,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:53:59,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:53:59,687 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 02:53:59,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:53:59,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1096690079, now seen corresponding path program 1 times [2020-08-19 02:53:59,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:53:59,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024098525] [2020-08-19 02:53:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:53:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:59,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:53:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:53:59,777 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 02:53:59,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024098525] [2020-08-19 02:53:59,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:53:59,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:53:59,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385695224] [2020-08-19 02:53:59,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:53:59,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:53:59,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:53:59,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:53:59,782 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 5 states. [2020-08-19 02:53:59,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:53:59,970 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-19 02:53:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:53:59,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-19 02:53:59,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:53:59,973 INFO L225 Difference]: With dead ends: 69 [2020-08-19 02:53:59,973 INFO L226 Difference]: Without dead ends: 67 [2020-08-19 02:53:59,974 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 02:53:59,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-19 02:53:59,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-08-19 02:53:59,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-19 02:53:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-08-19 02:53:59,995 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 12 [2020-08-19 02:53:59,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:53:59,995 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-08-19 02:53:59,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:53:59,996 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-08-19 02:53:59,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 02:53:59,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:53:59,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:53:59,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:54:00,000 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 02:54:00,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:00,001 INFO L82 PathProgramCache]: Analyzing trace with hash 362348992, now seen corresponding path program 1 times [2020-08-19 02:54:00,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:00,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207373469] [2020-08-19 02:54:00,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:00,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:00,107 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 02:54:00,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207373469] [2020-08-19 02:54:00,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:00,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:54:00,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768068022] [2020-08-19 02:54:00,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:54:00,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:00,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:54:00,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:54:00,110 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-08-19 02:54:00,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:00,273 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-08-19 02:54:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:54:00,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-19 02:54:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:00,275 INFO L225 Difference]: With dead ends: 73 [2020-08-19 02:54:00,275 INFO L226 Difference]: Without dead ends: 71 [2020-08-19 02:54:00,275 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 02:54:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-08-19 02:54:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-08-19 02:54:00,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-19 02:54:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-08-19 02:54:00,285 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 13 [2020-08-19 02:54:00,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:00,285 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-08-19 02:54:00,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:54:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-08-19 02:54:00,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 02:54:00,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:00,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:54:00,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:54:00,287 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 02:54:00,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:00,288 INFO L82 PathProgramCache]: Analyzing trace with hash -2105928756, now seen corresponding path program 1 times [2020-08-19 02:54:00,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:00,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485858939] [2020-08-19 02:54:00,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:00,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:00,368 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 02:54:00,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485858939] [2020-08-19 02:54:00,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:00,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:54:00,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425194628] [2020-08-19 02:54:00,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:54:00,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:00,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:54:00,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:54:00,371 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 6 states. [2020-08-19 02:54:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:00,549 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-08-19 02:54:00,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:54:00,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-19 02:54:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:00,551 INFO L225 Difference]: With dead ends: 71 [2020-08-19 02:54:00,552 INFO L226 Difference]: Without dead ends: 69 [2020-08-19 02:54:00,552 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 02:54:00,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-19 02:54:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-08-19 02:54:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-19 02:54:00,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-08-19 02:54:00,561 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2020-08-19 02:54:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:00,561 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-08-19 02:54:00,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:54:00,562 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-08-19 02:54:00,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 02:54:00,563 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:00,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:54:00,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:54:00,564 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 02:54:00,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:00,564 INFO L82 PathProgramCache]: Analyzing trace with hash 325126884, now seen corresponding path program 1 times [2020-08-19 02:54:00,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:00,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396336611] [2020-08-19 02:54:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:00,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:00,632 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 02:54:00,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396336611] [2020-08-19 02:54:00,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:00,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:54:00,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753253461] [2020-08-19 02:54:00,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:54:00,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:00,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:54:00,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:54:00,636 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 6 states. [2020-08-19 02:54:00,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:00,822 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-08-19 02:54:00,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:54:00,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-19 02:54:00,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:00,823 INFO L225 Difference]: With dead ends: 69 [2020-08-19 02:54:00,824 INFO L226 Difference]: Without dead ends: 67 [2020-08-19 02:54:00,824 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 02:54:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-19 02:54:00,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-08-19 02:54:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-19 02:54:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-08-19 02:54:00,831 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 15 [2020-08-19 02:54:00,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:00,831 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-08-19 02:54:00,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:54:00,832 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-08-19 02:54:00,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 02:54:00,832 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:00,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:54:00,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:54:00,833 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 02:54:00,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:00,834 INFO L82 PathProgramCache]: Analyzing trace with hash -858848822, now seen corresponding path program 1 times [2020-08-19 02:54:00,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:00,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127987407] [2020-08-19 02:54:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:00,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:00,931 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 02:54:00,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127987407] [2020-08-19 02:54:00,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:00,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:54:00,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782742895] [2020-08-19 02:54:00,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:54:00,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:00,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:54:00,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:54:00,933 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-08-19 02:54:01,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:01,178 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-08-19 02:54:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:54:01,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-08-19 02:54:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:01,180 INFO L225 Difference]: With dead ends: 112 [2020-08-19 02:54:01,180 INFO L226 Difference]: Without dead ends: 110 [2020-08-19 02:54:01,181 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 02:54:01,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-19 02:54:01,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 64. [2020-08-19 02:54:01,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-19 02:54:01,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-08-19 02:54:01,188 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 16 [2020-08-19 02:54:01,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:01,188 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-08-19 02:54:01,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:54:01,188 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-08-19 02:54:01,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 02:54:01,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:01,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:54:01,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:54:01,190 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 02:54:01,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:01,190 INFO L82 PathProgramCache]: Analyzing trace with hash -859278805, now seen corresponding path program 1 times [2020-08-19 02:54:01,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:01,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534503460] [2020-08-19 02:54:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:01,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:01,259 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 02:54:01,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534503460] [2020-08-19 02:54:01,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:01,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:54:01,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455802958] [2020-08-19 02:54:01,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:54:01,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:01,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:54:01,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:54:01,261 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-08-19 02:54:01,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:01,404 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-08-19 02:54:01,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:54:01,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-19 02:54:01,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:01,406 INFO L225 Difference]: With dead ends: 65 [2020-08-19 02:54:01,406 INFO L226 Difference]: Without dead ends: 61 [2020-08-19 02:54:01,406 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 02:54:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-19 02:54:01,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-19 02:54:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-19 02:54:01,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-08-19 02:54:01,414 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 16 [2020-08-19 02:54:01,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:01,414 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-08-19 02:54:01,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:54:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-08-19 02:54:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 02:54:01,416 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:01,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:54:01,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:54:01,416 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 02:54:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:01,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1489001901, now seen corresponding path program 1 times [2020-08-19 02:54:01,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:01,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390807036] [2020-08-19 02:54:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:01,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:01,480 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 02:54:01,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390807036] [2020-08-19 02:54:01,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:01,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:54:01,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622487726] [2020-08-19 02:54:01,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:54:01,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:01,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:54:01,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:54:01,488 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 5 states. [2020-08-19 02:54:01,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:01,636 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-08-19 02:54:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:54:01,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-19 02:54:01,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:01,638 INFO L225 Difference]: With dead ends: 61 [2020-08-19 02:54:01,638 INFO L226 Difference]: Without dead ends: 57 [2020-08-19 02:54:01,639 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 02:54:01,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-19 02:54:01,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-08-19 02:54:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-19 02:54:01,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-08-19 02:54:01,645 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2020-08-19 02:54:01,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:01,646 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-08-19 02:54:01,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:54:01,646 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-08-19 02:54:01,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 02:54:01,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:01,647 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 02:54:01,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:54:01,647 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 02:54:01,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:01,648 INFO L82 PathProgramCache]: Analyzing trace with hash -854506496, now seen corresponding path program 1 times [2020-08-19 02:54:01,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:01,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391393267] [2020-08-19 02:54:01,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:01,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:01,741 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 02:54:01,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391393267] [2020-08-19 02:54:01,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:01,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:54:01,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208143581] [2020-08-19 02:54:01,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:54:01,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:01,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:54:01,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:54:01,743 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-08-19 02:54:01,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:01,980 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-08-19 02:54:01,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:54:01,981 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-08-19 02:54:01,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:01,982 INFO L225 Difference]: With dead ends: 95 [2020-08-19 02:54:01,982 INFO L226 Difference]: Without dead ends: 93 [2020-08-19 02:54:01,983 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 02:54:01,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-19 02:54:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2020-08-19 02:54:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-19 02:54:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-08-19 02:54:01,988 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 17 [2020-08-19 02:54:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:01,989 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-08-19 02:54:01,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:54:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-08-19 02:54:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 02:54:01,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:01,990 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 02:54:01,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:54:01,991 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 02:54:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:01,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1071358986, now seen corresponding path program 1 times [2020-08-19 02:54:01,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:01,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567616670] [2020-08-19 02:54:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:02,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:02,045 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 02:54:02,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567616670] [2020-08-19 02:54:02,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:02,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:54:02,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562696758] [2020-08-19 02:54:02,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:54:02,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:02,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:54:02,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:54:02,048 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-08-19 02:54:02,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:02,212 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-08-19 02:54:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:54:02,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-19 02:54:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:02,213 INFO L225 Difference]: With dead ends: 72 [2020-08-19 02:54:02,213 INFO L226 Difference]: Without dead ends: 70 [2020-08-19 02:54:02,214 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 02:54:02,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-19 02:54:02,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-08-19 02:54:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-19 02:54:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-08-19 02:54:02,218 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2020-08-19 02:54:02,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:02,219 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-08-19 02:54:02,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:54:02,219 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-08-19 02:54:02,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 02:54:02,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:02,220 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 02:54:02,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:54:02,220 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 02:54:02,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:02,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1069819786, now seen corresponding path program 1 times [2020-08-19 02:54:02,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:02,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274868788] [2020-08-19 02:54:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:02,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:02,268 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 02:54:02,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274868788] [2020-08-19 02:54:02,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:02,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:54:02,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020554878] [2020-08-19 02:54:02,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:54:02,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:02,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:54:02,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:54:02,271 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-08-19 02:54:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:02,396 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-08-19 02:54:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:54:02,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-19 02:54:02,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:02,397 INFO L225 Difference]: With dead ends: 53 [2020-08-19 02:54:02,397 INFO L226 Difference]: Without dead ends: 51 [2020-08-19 02:54:02,398 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 02:54:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-19 02:54:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-08-19 02:54:02,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-19 02:54:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-08-19 02:54:02,402 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 17 [2020-08-19 02:54:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:02,403 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-08-19 02:54:02,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:54:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-08-19 02:54:02,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 02:54:02,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:02,405 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 02:54:02,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:54:02,405 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 02:54:02,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:02,406 INFO L82 PathProgramCache]: Analyzing trace with hash -726143538, now seen corresponding path program 1 times [2020-08-19 02:54:02,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:02,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256594758] [2020-08-19 02:54:02,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:02,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:02,521 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 02:54:02,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256594758] [2020-08-19 02:54:02,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:02,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:54:02,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398491645] [2020-08-19 02:54:02,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:54:02,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:02,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:54:02,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:54:02,523 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-08-19 02:54:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:02,690 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-08-19 02:54:02,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:54:02,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-19 02:54:02,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:02,692 INFO L225 Difference]: With dead ends: 50 [2020-08-19 02:54:02,692 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 02:54:02,693 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 02:54:02,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 02:54:02,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-08-19 02:54:02,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-19 02:54:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-08-19 02:54:02,697 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 18 [2020-08-19 02:54:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:02,697 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-08-19 02:54:02,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:54:02,698 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-08-19 02:54:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 02:54:02,698 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:02,698 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 02:54:02,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:54:02,699 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 02:54:02,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:02,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1148978332, now seen corresponding path program 1 times [2020-08-19 02:54:02,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:02,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057708497] [2020-08-19 02:54:02,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:02,743 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 02:54:02,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057708497] [2020-08-19 02:54:02,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:02,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:54:02,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364636199] [2020-08-19 02:54:02,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:54:02,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:02,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:54:02,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:54:02,746 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2020-08-19 02:54:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:02,919 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-08-19 02:54:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:54:02,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-19 02:54:02,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:02,921 INFO L225 Difference]: With dead ends: 69 [2020-08-19 02:54:02,921 INFO L226 Difference]: Without dead ends: 67 [2020-08-19 02:54:02,922 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 02:54:02,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-19 02:54:02,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2020-08-19 02:54:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 02:54:02,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-08-19 02:54:02,926 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-08-19 02:54:02,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:02,926 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-08-19 02:54:02,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:54:02,927 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-08-19 02:54:02,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 02:54:02,927 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:02,927 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 02:54:02,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 02:54:02,928 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 02:54:02,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:02,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1147612912, now seen corresponding path program 1 times [2020-08-19 02:54:02,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:02,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027504808] [2020-08-19 02:54:02,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:02,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:02,992 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 02:54:02,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027504808] [2020-08-19 02:54:02,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:02,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:54:02,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281146021] [2020-08-19 02:54:02,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:54:02,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:02,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:54:02,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:54:02,995 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-08-19 02:54:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:03,157 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-08-19 02:54:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:54:03,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-19 02:54:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:03,159 INFO L225 Difference]: With dead ends: 57 [2020-08-19 02:54:03,159 INFO L226 Difference]: Without dead ends: 55 [2020-08-19 02:54:03,160 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 02:54:03,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-19 02:54:03,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2020-08-19 02:54:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-19 02:54:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-08-19 02:54:03,169 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 18 [2020-08-19 02:54:03,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:03,169 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-08-19 02:54:03,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:54:03,170 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-08-19 02:54:03,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 02:54:03,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:03,171 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 02:54:03,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 02:54:03,172 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 02:54:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:03,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1195328162, now seen corresponding path program 1 times [2020-08-19 02:54:03,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:03,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112065070] [2020-08-19 02:54:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:03,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:03,300 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 02:54:03,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112065070] [2020-08-19 02:54:03,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:03,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:54:03,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764747385] [2020-08-19 02:54:03,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:54:03,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:03,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:54:03,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:54:03,306 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-08-19 02:54:03,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:03,450 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-08-19 02:54:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:54:03,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-19 02:54:03,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:03,452 INFO L225 Difference]: With dead ends: 41 [2020-08-19 02:54:03,452 INFO L226 Difference]: Without dead ends: 37 [2020-08-19 02:54:03,452 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 02:54:03,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-19 02:54:03,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-19 02:54:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-19 02:54:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-08-19 02:54:03,462 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-08-19 02:54:03,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:03,462 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-08-19 02:54:03,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:54:03,463 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-08-19 02:54:03,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 02:54:03,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:03,467 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 02:54:03,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 02:54:03,469 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 02:54:03,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:03,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1258593065, now seen corresponding path program 1 times [2020-08-19 02:54:03,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:03,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499264952] [2020-08-19 02:54:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:03,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:03,568 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 02:54:03,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499264952] [2020-08-19 02:54:03,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:03,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:54:03,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254194500] [2020-08-19 02:54:03,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:54:03,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:03,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:54:03,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:54:03,574 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-08-19 02:54:03,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:03,717 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-08-19 02:54:03,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:54:03,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-19 02:54:03,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:03,719 INFO L225 Difference]: With dead ends: 52 [2020-08-19 02:54:03,719 INFO L226 Difference]: Without dead ends: 50 [2020-08-19 02:54:03,719 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 02:54:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-19 02:54:03,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2020-08-19 02:54:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-19 02:54:03,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-19 02:54:03,726 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2020-08-19 02:54:03,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:03,726 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-19 02:54:03,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:54:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-19 02:54:03,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 02:54:03,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:03,731 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 02:54:03,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 02:54:03,732 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 02:54:03,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:03,732 INFO L82 PathProgramCache]: Analyzing trace with hash -950489901, now seen corresponding path program 1 times [2020-08-19 02:54:03,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:03,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694885694] [2020-08-19 02:54:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:03,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:03,786 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 02:54:03,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694885694] [2020-08-19 02:54:03,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:03,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:54:03,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328187050] [2020-08-19 02:54:03,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:54:03,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:03,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:54:03,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:54:03,790 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-19 02:54:03,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:03,887 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-08-19 02:54:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:54:03,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-19 02:54:03,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:03,888 INFO L225 Difference]: With dead ends: 35 [2020-08-19 02:54:03,888 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 02:54:03,888 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 02:54:03,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 02:54:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-19 02:54:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-19 02:54:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-19 02:54:03,893 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-08-19 02:54:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:03,893 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-19 02:54:03,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:54:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-19 02:54:03,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 02:54:03,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:54:03,894 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 02:54:03,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 02:54:03,894 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 02:54:03,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:54:03,895 INFO L82 PathProgramCache]: Analyzing trace with hash 599587266, now seen corresponding path program 1 times [2020-08-19 02:54:03,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:54:03,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242133042] [2020-08-19 02:54:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:54:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:54:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:54:03,934 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 02:54:03,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242133042] [2020-08-19 02:54:03,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:54:03,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:54:03,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148641825] [2020-08-19 02:54:03,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:54:03,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:54:03,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:54:03,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:54:03,937 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-08-19 02:54:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:54:04,023 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-08-19 02:54:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:54:04,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-19 02:54:04,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:54:04,024 INFO L225 Difference]: With dead ends: 37 [2020-08-19 02:54:04,024 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 02:54:04,025 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 02:54:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 02:54:04,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 02:54:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 02:54:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 02:54:04,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-19 02:54:04,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:54:04,027 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 02:54:04,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:54:04,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 02:54:04,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 02:54:04,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 02:54:04,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 02:54:04,337 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 02:54:04,338 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 02:54:04,338 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:54:04,338 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:54:04,338 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 02:54:04,338 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 02:54:04,339 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 02:54:04,339 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-19 02:54:04,339 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-19 02:54:04,339 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-19 02:54:04,339 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-19 02:54:04,339 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-08-19 02:54:04,339 INFO L268 CegarLoopResult]: For program point L349(line 349) no Hoare annotation was computed. [2020-08-19 02:54:04,340 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 373) no Hoare annotation was computed. [2020-08-19 02:54:04,340 INFO L268 CegarLoopResult]: For program point L151(lines 151 159) no Hoare annotation was computed. [2020-08-19 02:54:04,340 INFO L268 CegarLoopResult]: For program point L52(lines 52 252) no Hoare annotation was computed. [2020-08-19 02:54:04,340 INFO L268 CegarLoopResult]: For program point L308(line 308) no Hoare annotation was computed. [2020-08-19 02:54:04,340 INFO L268 CegarLoopResult]: For program point L275(lines 275 362) no Hoare annotation was computed. [2020-08-19 02:54:04,340 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 235) no Hoare annotation was computed. [2020-08-19 02:54:04,340 INFO L268 CegarLoopResult]: For program point L69(lines 69 93) no Hoare annotation was computed. [2020-08-19 02:54:04,341 INFO L268 CegarLoopResult]: For program point L185(lines 185 195) no Hoare annotation was computed. [2020-08-19 02:54:04,341 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 141) no Hoare annotation was computed. [2020-08-19 02:54:04,342 INFO L268 CegarLoopResult]: For program point L111(lines 111 202) no Hoare annotation was computed. [2020-08-19 02:54:04,342 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2020-08-19 02:54:04,342 INFO L268 CegarLoopResult]: For program point L235(line 235) no Hoare annotation was computed. [2020-08-19 02:54:04,342 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 02:54:04,343 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 02:54:04,344 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-08-19 02:54:04,344 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2020-08-19 02:54:04,344 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-08-19 02:54:04,344 INFO L268 CegarLoopResult]: For program point L277(line 277) no Hoare annotation was computed. [2020-08-19 02:54:04,344 INFO L268 CegarLoopResult]: For program point L335(lines 335 358) no Hoare annotation was computed. [2020-08-19 02:54:04,344 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 373) no Hoare annotation was computed. [2020-08-19 02:54:04,344 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2020-08-19 02:54:04,345 INFO L268 CegarLoopResult]: For program point L104(lines 104 208) no Hoare annotation was computed. [2020-08-19 02:54:04,345 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-08-19 02:54:04,345 INFO L268 CegarLoopResult]: For program point L294(lines 294 316) no Hoare annotation was computed. [2020-08-19 02:54:04,345 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-08-19 02:54:04,346 INFO L268 CegarLoopResult]: For program point L30(lines 30 366) no Hoare annotation was computed. [2020-08-19 02:54:04,346 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 02:54:04,346 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-08-19 02:54:04,346 INFO L268 CegarLoopResult]: For program point L22(lines 22 367) no Hoare annotation was computed. [2020-08-19 02:54:04,347 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-08-19 02:54:04,347 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-08-19 02:54:04,347 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 349) no Hoare annotation was computed. [2020-08-19 02:54:04,347 INFO L268 CegarLoopResult]: For program point L287(lines 287 361) no Hoare annotation was computed. [2020-08-19 02:54:04,347 INFO L268 CegarLoopResult]: For program point L221(lines 221 243) no Hoare annotation was computed. [2020-08-19 02:54:04,347 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 153) no Hoare annotation was computed. [2020-08-19 02:54:04,347 INFO L268 CegarLoopResult]: For program point L81(lines 81 91) no Hoare annotation was computed. [2020-08-19 02:54:04,347 INFO L268 CegarLoopResult]: For program point L337(line 337) no Hoare annotation was computed. [2020-08-19 02:54:04,348 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 337) no Hoare annotation was computed. [2020-08-19 02:54:04,348 INFO L268 CegarLoopResult]: For program point L139(lines 139 161) no Hoare annotation was computed. [2020-08-19 02:54:04,348 INFO L268 CegarLoopResult]: For program point L40(lines 40 254) no Hoare annotation was computed. [2020-08-19 02:54:04,348 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-08-19 02:54:04,348 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-08-19 02:54:04,348 INFO L268 CegarLoopResult]: For program point L123(lines 123 200) no Hoare annotation was computed. [2020-08-19 02:54:04,348 INFO L271 CegarLoopResult]: At program point L313(lines 30 366) the Hoare annotation is: true [2020-08-19 02:54:04,348 INFO L268 CegarLoopResult]: For program point L214(lines 214 249) no Hoare annotation was computed. [2020-08-19 02:54:04,349 INFO L268 CegarLoopResult]: For program point L173(lines 173 197) no Hoare annotation was computed. [2020-08-19 02:54:04,349 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2020-08-19 02:54:04,349 INFO L268 CegarLoopResult]: For program point L264(lines 264 364) no Hoare annotation was computed. [2020-08-19 02:54:04,349 INFO L268 CegarLoopResult]: For program point L132(lines 132 199) no Hoare annotation was computed. [2020-08-19 02:54:04,350 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 02:54:04,350 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2020-08-19 02:54:04,350 INFO L268 CegarLoopResult]: For program point L223(line 223) no Hoare annotation was computed. [2020-08-19 02:54:04,350 INFO L268 CegarLoopResult]: For program point L347(lines 347 356) no Hoare annotation was computed. [2020-08-19 02:54:04,350 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 02:54:04,351 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-19 02:54:04,351 INFO L268 CegarLoopResult]: For program point L306(lines 306 314) no Hoare annotation was computed. [2020-08-19 02:54:04,351 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-08-19 02:54:04,351 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-08-19 02:54:04,351 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-08-19 02:54:04,351 INFO L268 CegarLoopResult]: For program point L100(lines 100 250) no Hoare annotation was computed. [2020-08-19 02:54:04,351 INFO L268 CegarLoopResult]: For program point L323(lines 323 360) no Hoare annotation was computed. [2020-08-19 02:54:04,351 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2020-08-19 02:54:04,352 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-08-19 02:54:04,352 INFO L268 CegarLoopResult]: For program point L18(lines 18 372) no Hoare annotation was computed. [2020-08-19 02:54:04,352 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 277) no Hoare annotation was computed. [2020-08-19 02:54:04,352 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-08-19 02:54:04,352 INFO L268 CegarLoopResult]: For program point L233(lines 233 241) no Hoare annotation was computed. [2020-08-19 02:54:04,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:54:04 BoogieIcfgContainer [2020-08-19 02:54:04,378 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:54:04,382 INFO L168 Benchmark]: Toolchain (without parser) took 6665.18 ms. Allocated memory was 140.5 MB in the beginning and 278.4 MB in the end (delta: 137.9 MB). Free memory was 103.3 MB in the beginning and 168.5 MB in the end (delta: -65.2 MB). Peak memory consumption was 72.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:54:04,383 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 02:54:04,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.76 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 90.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:54:04,389 INFO L168 Benchmark]: Boogie Preprocessor took 121.85 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 90.4 MB in the beginning and 180.2 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:54:04,393 INFO L168 Benchmark]: RCFGBuilder took 514.39 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 155.2 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:54:04,393 INFO L168 Benchmark]: TraceAbstraction took 5668.21 ms. Allocated memory was 202.9 MB in the beginning and 278.4 MB in the end (delta: 75.5 MB). Free memory was 154.5 MB in the beginning and 168.5 MB in the end (delta: -14.0 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:54:04,403 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 353.76 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 90.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.85 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 90.4 MB in the beginning and 180.2 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 514.39 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 155.2 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5668.21 ms. Allocated memory was 202.9 MB in the beginning and 278.4 MB in the end (delta: 75.5 MB). Free memory was 154.5 MB in the beginning and 168.5 MB in the end (delta: -14.0 MB). Peak memory consumption was 61.5 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: 5.2s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 3.3s, 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, 0.1s 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...