/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/bitvector/byte_add_2-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:59:32,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:59:32,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:59:32,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:59:32,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:59:32,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:59:32,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:59:32,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:59:32,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:59:32,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:59:32,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:59:32,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:59:32,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:59:32,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:59:32,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:59:32,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:59:32,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:59:32,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:59:32,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:59:32,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:59:32,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:59:32,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:59:32,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:59:32,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:59:32,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:59:32,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:59:32,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:59:32,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:59:32,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:59:32,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:59:32,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:59:32,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:59:32,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:59:32,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:59:32,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:59:32,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:59:32,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:59:32,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:59:32,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:59:32,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:59:32,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:59:32,952 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 [2020-10-27 14:59:32,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:59:32,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:59:32,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:59:32,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:59:32,987 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:59:32,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:59:32,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:59:32,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:59:32,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:59:32,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:59:32,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:59:32,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:59:32,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:59:32,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:59:32,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:59:32,990 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:59:32,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:59:32,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:59:32,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:59:32,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:59:32,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:59:32,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:59:32,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:59:32,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:59:32,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:59:32,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:59:32,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:59:32,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:59:32,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:59:32,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:59:33,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:59:33,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:59:33,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:59:33,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:59:33,419 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:59:33,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/byte_add_2-2.i [2020-10-27 14:59:33,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cfb014ae/90323cc557fc43f9a5fafe156f0738ed/FLAG24e3080df [2020-10-27 14:59:34,122 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:59:34,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/byte_add_2-2.i [2020-10-27 14:59:34,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cfb014ae/90323cc557fc43f9a5fafe156f0738ed/FLAG24e3080df [2020-10-27 14:59:34,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cfb014ae/90323cc557fc43f9a5fafe156f0738ed [2020-10-27 14:59:34,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:59:34,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:59:34,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:59:34,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:59:34,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:59:34,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:34" (1/1) ... [2020-10-27 14:59:34,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c894ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:34, skipping insertion in model container [2020-10-27 14:59:34,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:34" (1/1) ... [2020-10-27 14:59:34,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:59:34,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:59:34,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:59:34,771 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:59:34,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:59:34,830 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:59:34,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:34 WrapperNode [2020-10-27 14:59:34,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:59:34,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:59:34,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:59:34,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:59:34,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:34" (1/1) ... [2020-10-27 14:59:34,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:34" (1/1) ... [2020-10-27 14:59:34,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:34" (1/1) ... [2020-10-27 14:59:34,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:34" (1/1) ... [2020-10-27 14:59:34,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:34" (1/1) ... [2020-10-27 14:59:34,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:34" (1/1) ... [2020-10-27 14:59:34,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:34" (1/1) ... [2020-10-27 14:59:34,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:59:34,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:59:34,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:59:34,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:59:34,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:34" (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 [2020-10-27 14:59:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:59:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:59:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:59:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:59:34,976 INFO L138 BoogieDeclarations]: Found implementation of procedure mp_add [2020-10-27 14:59:34,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:59:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:59:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:59:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:59:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:59:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:59:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:59:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-27 14:59:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:59:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure mp_add [2020-10-27 14:59:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:59:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:59:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:59:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:59:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:59:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:59:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:59:35,554 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:59:35,554 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:59:35,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:59:35 BoogieIcfgContainer [2020-10-27 14:59:35,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:59:35,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:59:35,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:59:35,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:59:35,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:59:34" (1/3) ... [2020-10-27 14:59:35,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267f3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:59:35, skipping insertion in model container [2020-10-27 14:59:35,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:34" (2/3) ... [2020-10-27 14:59:35,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267f3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:59:35, skipping insertion in model container [2020-10-27 14:59:35,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:59:35" (3/3) ... [2020-10-27 14:59:35,581 INFO L111 eAbstractionObserver]: Analyzing ICFG byte_add_2-2.i [2020-10-27 14:59:35,599 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:59:35,605 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:59:35,621 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:59:35,666 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:59:35,666 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:59:35,666 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:59:35,666 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:59:35,666 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:59:35,666 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:59:35,666 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:59:35,667 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:59:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-10-27 14:59:35,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 14:59:35,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:35,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:35,693 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:35,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:35,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1266705012, now seen corresponding path program 1 times [2020-10-27 14:59:35,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:35,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303468266] [2020-10-27 14:59:35,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:35,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:36,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:36,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:59:36,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:59:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 578 [2020-10-27 14:59:36,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 14:59:36,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:36,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:59:36,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:36,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:36,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:36,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:36,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 14:59:36,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:36,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:36,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:59:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:36,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:36,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:36,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:36,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 14:59:36,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:59:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 14:59:36,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 14:59:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:36,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:59:36,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303468266] [2020-10-27 14:59:36,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:59:36,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:59:36,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558371778] [2020-10-27 14:59:36,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:59:36,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:36,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:59:36,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:59:36,755 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-10-27 14:59:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:36,848 INFO L93 Difference]: Finished difference Result 84 states and 123 transitions. [2020-10-27 14:59:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:59:36,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-27 14:59:36,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:36,865 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:59:36,866 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 14:59:36,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:59:36,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 14:59:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-27 14:59:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 14:59:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2020-10-27 14:59:36,947 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 24 [2020-10-27 14:59:36,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:36,949 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2020-10-27 14:59:36,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:59:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2020-10-27 14:59:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 14:59:36,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:36,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:36,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:59:36,954 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:36,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:36,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1888748595, now seen corresponding path program 1 times [2020-10-27 14:59:36,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:36,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923053731] [2020-10-27 14:59:36,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:37,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:37,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 14:59:37,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:59:37,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-27 14:59:37,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 14:59:37,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 14:59:37,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:37,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:37,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:37,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:37,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:37,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:59:37,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:37,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:37,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:37,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:37,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:37,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:59:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:37,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:37,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 14:59:37,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:59:37,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 14:59:37,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:37,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:37,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:59:37,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 14:59:37,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:59:37,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923053731] [2020-10-27 14:59:37,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:59:37,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:59:37,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018540897] [2020-10-27 14:59:37,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:59:37,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:37,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:59:37,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:59:37,669 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand 4 states. [2020-10-27 14:59:38,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:38,045 INFO L93 Difference]: Finished difference Result 107 states and 174 transitions. [2020-10-27 14:59:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:59:38,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-27 14:59:38,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:38,048 INFO L225 Difference]: With dead ends: 107 [2020-10-27 14:59:38,048 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 14:59:38,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:59:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 14:59:38,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-27 14:59:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 14:59:38,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 101 transitions. [2020-10-27 14:59:38,065 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 101 transitions. Word has length 24 [2020-10-27 14:59:38,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:38,066 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 101 transitions. [2020-10-27 14:59:38,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:59:38,066 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 101 transitions. [2020-10-27 14:59:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 14:59:38,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:38,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:38,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:59:38,068 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:38,069 INFO L82 PathProgramCache]: Analyzing trace with hash -992029496, now seen corresponding path program 1 times [2020-10-27 14:59:38,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:38,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843482477] [2020-10-27 14:59:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:38,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:38,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:59:38,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:59:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-10-27 14:59:38,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:38,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:59:38,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-27 14:59:38,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:38,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:39,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:39,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:39,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:39,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:39,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:59:39,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:39,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:39,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:39,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:39,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:59:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:39,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:39,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 14:59:39,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:59:39,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-27 14:59:39,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:59:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 14:59:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:59:39,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843482477] [2020-10-27 14:59:39,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:59:39,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:59:39,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408647672] [2020-10-27 14:59:39,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:59:39,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:39,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:59:39,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:59:39,765 INFO L87 Difference]: Start difference. First operand 71 states and 101 transitions. Second operand 5 states. [2020-10-27 14:59:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:40,291 INFO L93 Difference]: Finished difference Result 164 states and 267 transitions. [2020-10-27 14:59:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:59:40,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-27 14:59:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:40,294 INFO L225 Difference]: With dead ends: 164 [2020-10-27 14:59:40,294 INFO L226 Difference]: Without dead ends: 130 [2020-10-27 14:59:40,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:59:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-27 14:59:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 94. [2020-10-27 14:59:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 14:59:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 136 transitions. [2020-10-27 14:59:40,312 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 136 transitions. Word has length 30 [2020-10-27 14:59:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:40,313 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 136 transitions. [2020-10-27 14:59:40,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:59:40,313 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 136 transitions. [2020-10-27 14:59:40,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 14:59:40,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:40,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:40,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:59:40,317 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:40,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:40,318 INFO L82 PathProgramCache]: Analyzing trace with hash 591071449, now seen corresponding path program 1 times [2020-10-27 14:59:40,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:40,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469485785] [2020-10-27 14:59:40,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:40,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:40,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:40,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:40,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:40,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:40,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:41,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:41,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:41,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:42,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:42,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:42,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:42,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:42,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:44,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:44,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:59:44,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 14:59:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4422 [2020-10-27 14:59:44,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:59:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 14:59:44,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:59:44,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:44,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:44,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:44,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:44,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:44,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:44,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:59:44,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:44,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:44,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:44,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:59:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:44,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:44,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:44,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:44,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:44,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:44,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:45,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:46,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:47,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:47,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 14:59:47,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 14:59:47,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2388 [2020-10-27 14:59:47,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:59:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 14:59:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:59:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:59:47,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469485785] [2020-10-27 14:59:47,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:59:47,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:59:47,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001813412] [2020-10-27 14:59:47,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:59:47,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:47,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:59:47,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:59:47,293 INFO L87 Difference]: Start difference. First operand 94 states and 136 transitions. Second operand 5 states. [2020-10-27 14:59:47,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:47,872 INFO L93 Difference]: Finished difference Result 246 states and 379 transitions. [2020-10-27 14:59:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:59:47,872 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-27 14:59:47,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:47,881 INFO L225 Difference]: With dead ends: 246 [2020-10-27 14:59:47,881 INFO L226 Difference]: Without dead ends: 173 [2020-10-27 14:59:47,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:59:47,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-27 14:59:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 123. [2020-10-27 14:59:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-27 14:59:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 183 transitions. [2020-10-27 14:59:47,916 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 183 transitions. Word has length 36 [2020-10-27 14:59:47,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:47,917 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 183 transitions. [2020-10-27 14:59:47,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:59:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 183 transitions. [2020-10-27 14:59:47,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 14:59:47,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:47,920 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:47,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:59:47,920 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:47,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:47,924 INFO L82 PathProgramCache]: Analyzing trace with hash -2082116242, now seen corresponding path program 1 times [2020-10-27 14:59:47,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:47,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978717441] [2020-10-27 14:59:47,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:47,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:47,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:48,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:49,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:49,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:49,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:51,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:51,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:51,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:51,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:51,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:52,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:52,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 14:59:52,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-27 14:59:52,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 14:59:52,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:52,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:59:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 14:59:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:59:52,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:53,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:53,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:53,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:53,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:59:53,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:53,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:53,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:53,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:53,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:53,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:59:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:53,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:54,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:55,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:55,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:55,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:55,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:57,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:58,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 14:59:58,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 41 [2020-10-27 14:59:58,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:59:58,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:59:58,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:59:58,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:59:58,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:59:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 14:59:58,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978717441] [2020-10-27 14:59:58,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:59:58,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:59:58,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130829505] [2020-10-27 14:59:58,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:59:58,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:58,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:59:58,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:59:58,106 INFO L87 Difference]: Start difference. First operand 123 states and 183 transitions. Second operand 5 states. [2020-10-27 14:59:58,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:58,593 INFO L93 Difference]: Finished difference Result 322 states and 491 transitions. [2020-10-27 14:59:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:59:58,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-27 14:59:58,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:58,596 INFO L225 Difference]: With dead ends: 322 [2020-10-27 14:59:58,596 INFO L226 Difference]: Without dead ends: 220 [2020-10-27 14:59:58,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:59:58,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-27 14:59:58,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 139. [2020-10-27 14:59:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-27 14:59:58,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 202 transitions. [2020-10-27 14:59:58,612 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 202 transitions. Word has length 42 [2020-10-27 14:59:58,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:58,613 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 202 transitions. [2020-10-27 14:59:58,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:59:58,613 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 202 transitions. [2020-10-27 14:59:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 14:59:58,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:58,614 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:59:58,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:59:58,615 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:58,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:58,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1201733804, now seen corresponding path program 2 times [2020-10-27 14:59:58,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:58,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517198727] [2020-10-27 14:59:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:59,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:00,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:03,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 15:00:03,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-27 15:00:03,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 15:00:03,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:00:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 15:00:03,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 15:00:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:03,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:03,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:03,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:00:03,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:00:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:03,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:03,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:04,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:05,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:06,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:07,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:07,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:07,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:07,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:07,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:07,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:07,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:07,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:08,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:08,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:00:08,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 71 [2020-10-27 15:00:08,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 15:00:08,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:00:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 15:00:08,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 15:00:08,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 15:00:08,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517198727] [2020-10-27 15:00:08,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:00:08,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 15:00:08,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523258363] [2020-10-27 15:00:08,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:00:08,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:08,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:00:08,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:00:08,784 INFO L87 Difference]: Start difference. First operand 139 states and 202 transitions. Second operand 7 states. [2020-10-27 15:00:09,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:09,363 INFO L93 Difference]: Finished difference Result 281 states and 411 transitions. [2020-10-27 15:00:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 15:00:09,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-27 15:00:09,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:09,366 INFO L225 Difference]: With dead ends: 281 [2020-10-27 15:00:09,366 INFO L226 Difference]: Without dead ends: 160 [2020-10-27 15:00:09,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:00:09,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-27 15:00:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2020-10-27 15:00:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-27 15:00:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 210 transitions. [2020-10-27 15:00:09,378 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 210 transitions. Word has length 42 [2020-10-27 15:00:09,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:09,379 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 210 transitions. [2020-10-27 15:00:09,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:00:09,379 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 210 transitions. [2020-10-27 15:00:09,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 15:00:09,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:09,381 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:09,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:00:09,381 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:09,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:09,382 INFO L82 PathProgramCache]: Analyzing trace with hash -588589953, now seen corresponding path program 1 times [2020-10-27 15:00:09,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:09,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719205326] [2020-10-27 15:00:09,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:09,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:09,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:09,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:09,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:09,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:09,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:09,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:09,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:09,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:09,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:10,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:10,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:10,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:11,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:11,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:11,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:13,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:14,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 15:00:14,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 47 [2020-10-27 15:00:14,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 15:00:14,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:00:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 15:00:14,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 15:00:14,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:14,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:14,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:14,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:14,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:14,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:14,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:00:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:14,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:14,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:15,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:16,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:19,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:19,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 15:00:19,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 48 [2020-10-27 15:00:19,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 15:00:19,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 15:00:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 15:00:19,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 15:00:19,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:00:19,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719205326] [2020-10-27 15:00:19,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:19,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 15:00:19,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649449350] [2020-10-27 15:00:19,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 15:00:19,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:19,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 15:00:19,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:00:19,619 INFO L87 Difference]: Start difference. First operand 148 states and 210 transitions. Second operand 9 states. [2020-10-27 15:00:21,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:21,105 INFO L93 Difference]: Finished difference Result 493 states and 723 transitions. [2020-10-27 15:00:21,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:00:21,106 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-27 15:00:21,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:21,110 INFO L225 Difference]: With dead ends: 493 [2020-10-27 15:00:21,111 INFO L226 Difference]: Without dead ends: 340 [2020-10-27 15:00:21,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-27 15:00:21,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-27 15:00:21,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 308. [2020-10-27 15:00:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-27 15:00:21,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 423 transitions. [2020-10-27 15:00:21,163 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 423 transitions. Word has length 48 [2020-10-27 15:00:21,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:21,163 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 423 transitions. [2020-10-27 15:00:21,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 15:00:21,163 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 423 transitions. [2020-10-27 15:00:21,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 15:00:21,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:21,168 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:21,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:00:21,169 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:21,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1926139063, now seen corresponding path program 1 times [2020-10-27 15:00:21,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:21,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115046184] [2020-10-27 15:00:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:21,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:21,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:22,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:26,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 15:00:26,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-27 15:00:26,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 15:00:26,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 15:00:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 15:00:26,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 15:00:26,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:26,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:26,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:26,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:26,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:26,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:00:26,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:26,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:26,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:26,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:26,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:26,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:00:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:26,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:26,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:27,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:28,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:28,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:28,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:31,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:31,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 15:00:31,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 51 [2020-10-27 15:00:31,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 15:00:31,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:31,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 15:00:31,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 15:00:31,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 15:00:31,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:31,504 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:00:31,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115046184] [2020-10-27 15:00:31,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:31,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 15:00:31,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332312354] [2020-10-27 15:00:31,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 15:00:31,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:31,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 15:00:31,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:00:31,506 INFO L87 Difference]: Start difference. First operand 308 states and 423 transitions. Second operand 11 states. [2020-10-27 15:00:33,022 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-27 15:00:33,218 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-10-27 15:00:33,391 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-27 15:00:35,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:35,284 INFO L93 Difference]: Finished difference Result 1474 states and 2122 transitions. [2020-10-27 15:00:35,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 15:00:35,285 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-27 15:00:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:35,291 INFO L225 Difference]: With dead ends: 1474 [2020-10-27 15:00:35,291 INFO L226 Difference]: Without dead ends: 1106 [2020-10-27 15:00:35,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=258, Invalid=864, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 15:00:35,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2020-10-27 15:00:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 578. [2020-10-27 15:00:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-27 15:00:35,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 794 transitions. [2020-10-27 15:00:35,328 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 794 transitions. Word has length 49 [2020-10-27 15:00:35,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:35,328 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 794 transitions. [2020-10-27 15:00:35,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 15:00:35,328 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 794 transitions. [2020-10-27 15:00:35,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 15:00:35,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:35,332 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:35,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:00:35,332 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:35,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:35,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1255708118, now seen corresponding path program 1 times [2020-10-27 15:00:35,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:35,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172375673] [2020-10-27 15:00:35,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:36,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:36,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:36,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:36,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:40,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 15:00:40,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-27 15:00:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 15:00:40,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 15:00:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 15:00:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 15:00:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:40,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:40,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:40,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:40,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:40,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:40,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:40,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:40,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:00:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:40,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:41,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:43,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:44,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:45,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:45,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 15:00:45,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 108 [2020-10-27 15:00:45,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 15:00:45,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 15:00:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 15:00:45,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 15:00:45,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:00:45,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172375673] [2020-10-27 15:00:45,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:00:45,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 15:00:45,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160741970] [2020-10-27 15:00:45,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 15:00:45,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:00:45,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 15:00:45,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-27 15:00:45,873 INFO L87 Difference]: Start difference. First operand 578 states and 794 transitions. Second operand 14 states. [2020-10-27 15:00:50,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:00:50,946 INFO L93 Difference]: Finished difference Result 1689 states and 2359 transitions. [2020-10-27 15:00:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 15:00:50,947 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2020-10-27 15:00:50,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:00:50,954 INFO L225 Difference]: With dead ends: 1689 [2020-10-27 15:00:50,954 INFO L226 Difference]: Without dead ends: 1062 [2020-10-27 15:00:50,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=473, Invalid=1977, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 15:00:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2020-10-27 15:00:50,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 632. [2020-10-27 15:00:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632 states. [2020-10-27 15:00:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 808 transitions. [2020-10-27 15:00:50,991 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 808 transitions. Word has length 50 [2020-10-27 15:00:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:00:50,991 INFO L481 AbstractCegarLoop]: Abstraction has 632 states and 808 transitions. [2020-10-27 15:00:50,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 15:00:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 808 transitions. [2020-10-27 15:00:50,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 15:00:50,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:00:50,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:00:50,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:00:50,994 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:00:50,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:00:50,995 INFO L82 PathProgramCache]: Analyzing trace with hash -946740421, now seen corresponding path program 1 times [2020-10-27 15:00:50,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:00:50,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687019611] [2020-10-27 15:00:50,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:00:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:51,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:51,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:53,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:54,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:54,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:56,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 15:00:56,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 47 [2020-10-27 15:00:56,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 15:00:56,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:56,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:00:56,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 15:00:56,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 15:00:56,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:00:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:00:56,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:00:56,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:00:56,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:00:56,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:00:56,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:00:56,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:00:56,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:00:56,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:00:56,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:00:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:00:56,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:56,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:57,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:58,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:58,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:00:59,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:01,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 15:01:01,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 46 [2020-10-27 15:01:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 15:01:01,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:01:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 15:01:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 15:01:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 15:01:01,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687019611] [2020-10-27 15:01:01,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:01:01,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 15:01:01,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836235250] [2020-10-27 15:01:01,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:01:01,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:01,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:01:01,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:01:01,086 INFO L87 Difference]: Start difference. First operand 632 states and 808 transitions. Second operand 4 states. [2020-10-27 15:01:01,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:01,304 INFO L93 Difference]: Finished difference Result 894 states and 1095 transitions. [2020-10-27 15:01:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 15:01:01,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-27 15:01:01,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:01,310 INFO L225 Difference]: With dead ends: 894 [2020-10-27 15:01:01,310 INFO L226 Difference]: Without dead ends: 846 [2020-10-27 15:01:01,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:01:01,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-10-27 15:01:01,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 748. [2020-10-27 15:01:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-10-27 15:01:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 933 transitions. [2020-10-27 15:01:01,357 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 933 transitions. Word has length 57 [2020-10-27 15:01:01,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:01,358 INFO L481 AbstractCegarLoop]: Abstraction has 748 states and 933 transitions. [2020-10-27 15:01:01,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:01:01,358 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 933 transitions. [2020-10-27 15:01:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 15:01:01,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:01,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:01,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:01:01,361 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:01,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1094727232, now seen corresponding path program 1 times [2020-10-27 15:01:01,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:01,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526532188] [2020-10-27 15:01:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:01,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:02,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:03,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:03,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:06,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 15:01:06,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-27 15:01:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 15:01:06,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:01:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-27 15:01:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 15:01:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:06,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:06,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:06,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:06,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:06,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 15:01:06,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:06,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:06,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:06,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:06,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:01:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:06,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:07,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:07,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:07,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:07,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:07,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:08,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:08,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:08,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:08,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:08,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:09,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:11,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:11,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 15:01:11,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-27 15:01:11,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 15:01:11,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:01:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 15:01:11,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 15:01:11,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 15:01:11,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526532188] [2020-10-27 15:01:11,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:11,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 15:01:11,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923099163] [2020-10-27 15:01:11,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 15:01:11,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:11,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 15:01:11,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:01:11,503 INFO L87 Difference]: Start difference. First operand 748 states and 933 transitions. Second operand 6 states. [2020-10-27 15:01:12,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:01:12,024 INFO L93 Difference]: Finished difference Result 1712 states and 2135 transitions. [2020-10-27 15:01:12,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 15:01:12,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-27 15:01:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:01:12,031 INFO L225 Difference]: With dead ends: 1712 [2020-10-27 15:01:12,032 INFO L226 Difference]: Without dead ends: 978 [2020-10-27 15:01:12,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:01:12,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-27 15:01:12,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 667. [2020-10-27 15:01:12,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-10-27 15:01:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 827 transitions. [2020-10-27 15:01:12,078 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 827 transitions. Word has length 57 [2020-10-27 15:01:12,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:01:12,079 INFO L481 AbstractCegarLoop]: Abstraction has 667 states and 827 transitions. [2020-10-27 15:01:12,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 15:01:12,079 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 827 transitions. [2020-10-27 15:01:12,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 15:01:12,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:01:12,081 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:01:12,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:01:12,081 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:01:12,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:01:12,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1341107207, now seen corresponding path program 1 times [2020-10-27 15:01:12,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:01:12,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685370975] [2020-10-27 15:01:12,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:01:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:12,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:13,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:17,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:17,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 15:01:17,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 45 [2020-10-27 15:01:17,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 15:01:17,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 15:01:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 15:01:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 15:01:17,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:17,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:01:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:17,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:17,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:17,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:01:17,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:01:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 15:01:17,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:01:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:01:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:01:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:17,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 15:01:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:01:17,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:17,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:17,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:17,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:17,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:17,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:17,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:17,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:17,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:19,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:20,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:21,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:21,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:21,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:01:22,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:01:22,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 15:01:22,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 44 [2020-10-27 15:01:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 15:01:22,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:01:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 15:01:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 15:01:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 15:01:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:01:26,586 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2020-10-27 15:01:28,807 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-27 15:01:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 15:01:28,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685370975] [2020-10-27 15:01:28,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:01:28,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 15:01:28,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428715795] [2020-10-27 15:01:28,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 15:01:28,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:01:28,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 15:01:28,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=67, Unknown=1, NotChecked=0, Total=90 [2020-10-27 15:01:28,894 INFO L87 Difference]: Start difference. First operand 667 states and 827 transitions. Second operand 10 states. [2020-10-27 15:01:29,320 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-27 15:01:35,891 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 15:01:42,758 WARN L193 SmtUtils]: Spent 4.41 s on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-27 15:01:52,069 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (div c_mp_add_~i~0 256))) (let ((.cse2 (* 256 .cse3))) (let ((.cse0 (div c_mp_add_~na~0 256)) (.cse1 (div c_mp_add_~nb~0 256)) (.cse4 (+ c_mp_add_~na~0 .cse2)) (.cse5 (* c_mp_add_~na~0 (- 1)))) (and (<= .cse0 0) (= |c_#t~string0.offset| |c_old(#t~string0.offset)|) (or (<= (+ (* 512 .cse1) c_mp_add_~i~0 257) (+ (* 2 c_mp_add_~nb~0) .cse2)) (and (< .cse0 (+ .cse3 1)) (<= (+ (* 256 .cse0) c_mp_add_~i~0 3) .cse4))) (= |c_old(#length)| |c_#length|) (= |c_#t~string1.base| |c_old(#t~string1.base)|) (= |c_#NULL.base| |c_old(#NULL.base)|) (<= (+ (* 256 .cse1) c_mp_add_~i~0 (* 256 (div (+ (* (div (+ (* c_mp_add_~nb~0 (- 2)) (* .cse1 256) (* .cse3 (- 256)) c_mp_add_~i~0 257) 256) 256) .cse5 259) 256)) 4) .cse4) (= |c_#t~string0.base| |c_old(#t~string0.base)|) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (<= (+ c_mp_add_~nb~0 (* 256 (div (+ (* (div (+ (* c_mp_add_~nb~0 (- 1)) 258) 256) 256) .cse5 259) 256)) 1) c_mp_add_~na~0) (= |c_old(#valid)| |c_#valid|) (= |c_#t~string1.offset| |c_old(#t~string1.offset)|))))) is different from false [2020-10-27 15:01:52,660 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 15:02:47,255 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 15:03:03,269 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 15:03:21,311 WARN L193 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 88 DAG size of output: 84