/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/eca-rers2012/Problem04_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:26:04,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:26:04,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:26:04,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:26:04,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:26:04,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:26:04,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:26:04,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:26:04,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:26:04,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:26:04,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:26:04,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:26:04,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:26:04,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:26:04,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:26:04,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:26:04,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:26:04,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:26:04,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:26:05,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:26:05,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:26:05,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:26:05,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:26:05,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:26:05,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:26:05,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:26:05,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:26:05,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:26:05,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:26:05,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:26:05,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:26:05,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:26:05,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:26:05,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:26:05,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:26:05,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:26:05,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:26:05,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:26:05,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:26:05,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:26:05,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:26:05,036 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 [2020-10-28 10:26:05,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:26:05,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:26:05,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:26:05,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:26:05,070 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:26:05,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:26:05,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:26:05,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:26:05,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:26:05,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:26:05,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:26:05,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:26:05,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:26:05,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:26:05,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:26:05,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:26:05,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:26:05,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:26:05,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:26:05,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:26:05,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:26:05,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:26:05,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:26:05,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:26:05,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:26:05,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:26:05,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:26:05,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:26:05,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:26:05,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:26:05,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:26:05,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:26:05,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:26:05,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:26:05,504 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:26:05,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label14.c [2020-10-28 10:26:05,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42a607578/7111f1b437634c8897feccf7035270f1/FLAGfa2f28e38 [2020-10-28 10:26:06,474 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:26:06,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label14.c [2020-10-28 10:26:06,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42a607578/7111f1b437634c8897feccf7035270f1/FLAGfa2f28e38 [2020-10-28 10:26:07,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42a607578/7111f1b437634c8897feccf7035270f1 [2020-10-28 10:26:07,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:26:07,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:26:07,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:26:07,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:26:07,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:26:07,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:26:07" (1/1) ... [2020-10-28 10:26:07,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f6f4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:26:07, skipping insertion in model container [2020-10-28 10:26:07,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:26:07" (1/1) ... [2020-10-28 10:26:07,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:26:07,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:26:08,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:26:08,553 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:26:09,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:26:09,353 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:26:09,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:26:09 WrapperNode [2020-10-28 10:26:09,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:26:09,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:26:09,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:26:09,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:26:09,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:26:09" (1/1) ... [2020-10-28 10:26:09,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:26:09" (1/1) ... [2020-10-28 10:26:09,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:26:09" (1/1) ... [2020-10-28 10:26:09,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:26:09" (1/1) ... [2020-10-28 10:26:09,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:26:09" (1/1) ... [2020-10-28 10:26:09,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:26:09" (1/1) ... [2020-10-28 10:26:09,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:26:09" (1/1) ... [2020-10-28 10:26:09,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:26:09,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:26:09,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:26:09,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:26:09,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:26:09" (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 [2020-10-28 10:26:09,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:26:09,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:26:09,757 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:26:09,757 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:26:09,757 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:26:09,757 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:26:09,758 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:26:09,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:26:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:26:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:26:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:26:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:26:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:26:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:26:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:26:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:26:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:26:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:26:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:26:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:26:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:26:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:26:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:26:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:26:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:26:14,661 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:26:14,661 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:26:14,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:26:14 BoogieIcfgContainer [2020-10-28 10:26:14,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:26:14,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:26:14,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:26:14,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:26:14,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:26:07" (1/3) ... [2020-10-28 10:26:14,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aea76b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:26:14, skipping insertion in model container [2020-10-28 10:26:14,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:26:09" (2/3) ... [2020-10-28 10:26:14,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aea76b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:26:14, skipping insertion in model container [2020-10-28 10:26:14,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:26:14" (3/3) ... [2020-10-28 10:26:14,676 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label14.c [2020-10-28 10:26:14,688 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:26:14,699 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:26:14,714 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:26:14,760 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:26:14,760 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:26:14,760 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:26:14,760 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:26:14,761 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:26:14,761 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:26:14,761 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:26:14,761 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:26:14,804 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-28 10:26:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2020-10-28 10:26:14,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:14,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:26:14,860 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:14,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:14,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1793122080, now seen corresponding path program 1 times [2020-10-28 10:26:14,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:14,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444417576] [2020-10-28 10:26:14,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:16,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:19,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:20,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:20,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 805 [2020-10-28 10:26:20,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:26:20,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 10:26:20,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:20,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 10:26:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:26:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 796 [2020-10-28 10:26:20,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:26:21,622 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:26:21,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:26:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:21,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:21,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:21,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:26:21,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 10:26:21,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:21,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:26:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:26:21,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:26:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:26:23,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444417576] [2020-10-28 10:26:23,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:26:23,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:26:23,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574884634] [2020-10-28 10:26:23,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:26:23,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:26:23,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:26:23,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:26:23,040 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-28 10:26:23,213 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:26:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:26:33,869 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-28 10:26:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:26:33,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 789 [2020-10-28 10:26:33,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:26:33,921 INFO L225 Difference]: With dead ends: 2677 [2020-10-28 10:26:33,921 INFO L226 Difference]: Without dead ends: 1703 [2020-10-28 10:26:33,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:26:33,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-28 10:26:34,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-28 10:26:34,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-28 10:26:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3030 transitions. [2020-10-28 10:26:34,128 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3030 transitions. Word has length 789 [2020-10-28 10:26:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:26:34,131 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3030 transitions. [2020-10-28 10:26:34,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:26:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3030 transitions. [2020-10-28 10:26:34,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2020-10-28 10:26:34,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:34,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-28 10:26:34,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:26:34,161 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:34,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:34,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1399161982, now seen corresponding path program 1 times [2020-10-28 10:26:34,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:34,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114911895] [2020-10-28 10:26:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:34,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:39,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:39,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 815 [2020-10-28 10:26:39,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:26:39,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 10:26:39,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:39,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:26:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:26:39,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:26:39,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:39,700 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:26:39,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:26:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:39,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:39,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:26:39,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:39,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:26:39,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:39,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:39,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:26:39,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:39,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:26:39,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:39,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:26:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:39,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:39,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:39,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:26:39,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:39,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:26:39,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:39,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:26:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:26:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 10:26:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:26:40,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114911895] [2020-10-28 10:26:40,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:26:40,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:26:40,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756862038] [2020-10-28 10:26:40,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:26:40,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:26:40,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:26:40,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:26:40,245 INFO L87 Difference]: Start difference. First operand 1690 states and 3030 transitions. Second operand 7 states. [2020-10-28 10:26:40,379 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:26:46,993 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 10:26:52,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:26:52,476 INFO L93 Difference]: Finished difference Result 5176 states and 9306 transitions. [2020-10-28 10:26:52,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:26:52,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 797 [2020-10-28 10:26:52,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:26:52,498 INFO L225 Difference]: With dead ends: 5176 [2020-10-28 10:26:52,499 INFO L226 Difference]: Without dead ends: 3492 [2020-10-28 10:26:52,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:26:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2020-10-28 10:26:52,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3437. [2020-10-28 10:26:52,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3437 states. [2020-10-28 10:26:52,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 5763 transitions. [2020-10-28 10:26:52,616 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 5763 transitions. Word has length 797 [2020-10-28 10:26:52,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:26:52,616 INFO L481 AbstractCegarLoop]: Abstraction has 3437 states and 5763 transitions. [2020-10-28 10:26:52,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:26:52,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 5763 transitions. [2020-10-28 10:26:52,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2020-10-28 10:26:52,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:26:52,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:26:52,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:26:52,651 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:26:52,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:26:52,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1591176994, now seen corresponding path program 1 times [2020-10-28 10:26:52,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:26:52,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615872931] [2020-10-28 10:26:52,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:26:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:53,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:57,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:57,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 817 [2020-10-28 10:26:57,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:26:57,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 10:26:57,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:57,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:26:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:26:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:26:57,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:57,960 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:26:57,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:26:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:57,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:57,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:57,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:26:57,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:57,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:26:57,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:57,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:57,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:26:57,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:26:57,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:26:57,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:58,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:26:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:26:58,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:26:58,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:26:58,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:26:58,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:26:58,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:26:58,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:26:58,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:26:58,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:26:58,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:26:58,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:26:58,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:26:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:26:58,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615872931] [2020-10-28 10:26:58,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:26:58,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:26:58,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596830225] [2020-10-28 10:26:58,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:26:58,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:26:58,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:26:58,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:26:58,425 INFO L87 Difference]: Start difference. First operand 3437 states and 5763 transitions. Second operand 8 states. [2020-10-28 10:27:10,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:27:10,897 INFO L93 Difference]: Finished difference Result 10549 states and 18119 transitions. [2020-10-28 10:27:10,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:27:10,906 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 799 [2020-10-28 10:27:10,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:27:10,948 INFO L225 Difference]: With dead ends: 10549 [2020-10-28 10:27:10,948 INFO L226 Difference]: Without dead ends: 7118 [2020-10-28 10:27:10,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:27:10,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7118 states. [2020-10-28 10:27:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7118 to 7023. [2020-10-28 10:27:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-10-28 10:27:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 11340 transitions. [2020-10-28 10:27:11,217 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 11340 transitions. Word has length 799 [2020-10-28 10:27:11,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:27:11,217 INFO L481 AbstractCegarLoop]: Abstraction has 7023 states and 11340 transitions. [2020-10-28 10:27:11,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:27:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 11340 transitions. [2020-10-28 10:27:11,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-28 10:27:11,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:27:11,247 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:27:11,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:27:11,247 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:27:11,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:27:11,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1978469247, now seen corresponding path program 1 times [2020-10-28 10:27:11,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:27:11,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857571877] [2020-10-28 10:27:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:27:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:12,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:15,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:16,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:16,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-28 10:27:16,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:27:16,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 10:27:16,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:16,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:16,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:27:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:27:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:27:16,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:16,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:27:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:16,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:16,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:27:16,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:16,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:27:16,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:16,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:16,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:27:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:16,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:27:16,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:16,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:27:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:16,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:16,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:16,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:27:16,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:16,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:27:16,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:16,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:27:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:27:16,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:27:17,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857571877] [2020-10-28 10:27:17,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:27:17,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:27:17,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646397851] [2020-10-28 10:27:17,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:27:17,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:27:17,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:27:17,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:27:17,064 INFO L87 Difference]: Start difference. First operand 7023 states and 11340 transitions. Second operand 7 states. [2020-10-28 10:27:29,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:27:29,590 INFO L93 Difference]: Finished difference Result 21186 states and 35493 transitions. [2020-10-28 10:27:29,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 10:27:29,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 800 [2020-10-28 10:27:29,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:27:29,664 INFO L225 Difference]: With dead ends: 21186 [2020-10-28 10:27:29,664 INFO L226 Difference]: Without dead ends: 14169 [2020-10-28 10:27:29,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:27:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14169 states. [2020-10-28 10:27:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14169 to 14144. [2020-10-28 10:27:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14144 states. [2020-10-28 10:27:30,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14144 states to 14144 states and 22536 transitions. [2020-10-28 10:27:30,097 INFO L78 Accepts]: Start accepts. Automaton has 14144 states and 22536 transitions. Word has length 800 [2020-10-28 10:27:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:27:30,098 INFO L481 AbstractCegarLoop]: Abstraction has 14144 states and 22536 transitions. [2020-10-28 10:27:30,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:27:30,098 INFO L276 IsEmpty]: Start isEmpty. Operand 14144 states and 22536 transitions. [2020-10-28 10:27:30,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2020-10-28 10:27:30,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:27:30,149 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-28 10:27:30,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:27:30,149 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:27:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:27:30,150 INFO L82 PathProgramCache]: Analyzing trace with hash -141714387, now seen corresponding path program 1 times [2020-10-28 10:27:30,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:27:30,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455443522] [2020-10-28 10:27:30,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:27:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:35,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:35,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 874 [2020-10-28 10:27:35,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:27:35,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-28 10:27:35,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:35,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:35,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:35,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 10:27:35,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 10:27:35,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:35,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:27:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:35,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:35,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:35,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:27:35,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:27:35,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:35,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:27:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:27:35,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:35,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:27:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:35,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:35,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:35,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 10:27:35,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:35,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:27:35,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:35,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:27:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:35,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 10:27:35,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 10:27:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:35,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:35,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:35,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:27:35,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:35,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 10:27:35,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:35,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:35,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:27:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:27:35,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:36,187 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:27:36,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455443522] [2020-10-28 10:27:36,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:27:36,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:27:36,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819636091] [2020-10-28 10:27:36,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:27:36,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:27:36,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:27:36,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:27:36,190 INFO L87 Difference]: Start difference. First operand 14144 states and 22536 transitions. Second operand 7 states. [2020-10-28 10:27:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:27:47,467 INFO L93 Difference]: Finished difference Result 35387 states and 57705 transitions. [2020-10-28 10:27:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:27:47,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 854 [2020-10-28 10:27:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:27:47,558 INFO L225 Difference]: With dead ends: 35387 [2020-10-28 10:27:47,558 INFO L226 Difference]: Without dead ends: 21249 [2020-10-28 10:27:47,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:27:47,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21249 states. [2020-10-28 10:27:48,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21249 to 21205. [2020-10-28 10:27:48,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21205 states. [2020-10-28 10:27:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21205 states to 21205 states and 32962 transitions. [2020-10-28 10:27:48,179 INFO L78 Accepts]: Start accepts. Automaton has 21205 states and 32962 transitions. Word has length 854 [2020-10-28 10:27:48,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:27:48,180 INFO L481 AbstractCegarLoop]: Abstraction has 21205 states and 32962 transitions. [2020-10-28 10:27:48,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:27:48,180 INFO L276 IsEmpty]: Start isEmpty. Operand 21205 states and 32962 transitions. [2020-10-28 10:27:48,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2020-10-28 10:27:48,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:27:48,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-28 10:27:48,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:27:48,255 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:27:48,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:27:48,256 INFO L82 PathProgramCache]: Analyzing trace with hash -2100066128, now seen corresponding path program 1 times [2020-10-28 10:27:48,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:27:48,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306865602] [2020-10-28 10:27:48,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:27:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:48,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:53,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:53,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 875 [2020-10-28 10:27:53,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:27:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-28 10:27:53,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:53,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 10:27:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 10:27:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:53,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:27:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:53,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:53,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:53,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:27:53,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:53,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:27:53,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:53,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:53,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:27:53,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:53,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:27:53,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:53,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:27:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:53,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:53,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:53,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 10:27:53,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:53,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:27:53,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:53,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:53,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:27:53,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:27:53,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:27:53,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:27:53,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 10:27:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:27:53,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:27:53,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:27:53,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:27:53,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:27:53,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 10:27:53,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:27:53,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:27:53,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:27:53,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:27:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 10:27:53,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:27:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:27:54,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306865602] [2020-10-28 10:27:54,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:27:54,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:27:54,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823248273] [2020-10-28 10:27:54,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:27:54,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:27:54,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:27:54,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:27:54,350 INFO L87 Difference]: Start difference. First operand 21205 states and 32962 transitions. Second operand 7 states. [2020-10-28 10:27:58,131 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 10:28:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:28:07,374 INFO L93 Difference]: Finished difference Result 61983 states and 100201 transitions. [2020-10-28 10:28:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 10:28:07,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 855 [2020-10-28 10:28:07,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:28:07,553 INFO L225 Difference]: With dead ends: 61983 [2020-10-28 10:28:07,554 INFO L226 Difference]: Without dead ends: 40784 [2020-10-28 10:28:07,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:28:07,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40784 states. [2020-10-28 10:28:08,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40784 to 33253. [2020-10-28 10:28:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33253 states. [2020-10-28 10:28:08,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33253 states to 33253 states and 50287 transitions. [2020-10-28 10:28:08,546 INFO L78 Accepts]: Start accepts. Automaton has 33253 states and 50287 transitions. Word has length 855 [2020-10-28 10:28:08,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:28:08,547 INFO L481 AbstractCegarLoop]: Abstraction has 33253 states and 50287 transitions. [2020-10-28 10:28:08,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:28:08,547 INFO L276 IsEmpty]: Start isEmpty. Operand 33253 states and 50287 transitions. [2020-10-28 10:28:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2020-10-28 10:28:08,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:28:08,635 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-28 10:28:08,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:28:08,636 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:28:08,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:28:08,636 INFO L82 PathProgramCache]: Analyzing trace with hash -231944772, now seen corresponding path program 1 times [2020-10-28 10:28:08,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:28:08,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388353005] [2020-10-28 10:28:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:28:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:08,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:08,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:09,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:09,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:13,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:13,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 955 [2020-10-28 10:28:13,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:28:13,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 10:28:13,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:13,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:28:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:28:13,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 10:28:13,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:13,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:28:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:13,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:13,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:13,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:28:13,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:13,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:28:13,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:13,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:13,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:13,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:28:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:14,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:14,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:28:14,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:14,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:28:14,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:14,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:28:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:14,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:28:14,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:14,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:28:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:14,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:14,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:14,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:28:14,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:14,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 10:28:14,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:14,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:28:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:28:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 10:28:14,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:14,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 10:28:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:14,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:14,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:28:14,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:14,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:28:14,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:14,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:14,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:14,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 10:28:14,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:14,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:14,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-28 10:28:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:14,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:14,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:14,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:28:14,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:14,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:28:14,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:14,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 10:28:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 154 proven. 69 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-28 10:28:14,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388353005] [2020-10-28 10:28:14,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:28:14,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:28:14,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997840395] [2020-10-28 10:28:14,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:28:14,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:28:14,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:28:14,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:28:14,574 INFO L87 Difference]: Start difference. First operand 33253 states and 50287 transitions. Second operand 8 states. [2020-10-28 10:28:14,702 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:28:27,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:28:27,726 INFO L93 Difference]: Finished difference Result 87130 states and 136714 transitions. [2020-10-28 10:28:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:28:27,729 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 931 [2020-10-28 10:28:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:28:27,960 INFO L225 Difference]: With dead ends: 87130 [2020-10-28 10:28:27,960 INFO L226 Difference]: Without dead ends: 53883 [2020-10-28 10:28:28,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:28:28,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53883 states. [2020-10-28 10:28:29,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53883 to 52057. [2020-10-28 10:28:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52057 states. [2020-10-28 10:28:29,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52057 states to 52057 states and 71926 transitions. [2020-10-28 10:28:29,495 INFO L78 Accepts]: Start accepts. Automaton has 52057 states and 71926 transitions. Word has length 931 [2020-10-28 10:28:29,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:28:29,496 INFO L481 AbstractCegarLoop]: Abstraction has 52057 states and 71926 transitions. [2020-10-28 10:28:29,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:28:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 52057 states and 71926 transitions. [2020-10-28 10:28:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2020-10-28 10:28:29,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:28:29,586 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-28 10:28:29,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:28:29,586 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:28:29,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:28:29,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1778738205, now seen corresponding path program 1 times [2020-10-28 10:28:29,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:28:29,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027856269] [2020-10-28 10:28:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:28:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:29,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:29,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:29,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:30,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:32,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:34,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:34,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 984 [2020-10-28 10:28:34,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:28:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 10:28:34,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:34,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:28:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:28:34,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 10:28:34,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:34,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:28:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:34,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:34,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:34,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:28:34,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:28:34,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:34,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:34,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:28:34,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:28:34,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:28:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:35,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:28:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:35,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:35,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:35,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 10:28:35,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:35,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 10:28:35,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:35,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:28:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:28:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 10:28:35,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:35,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 10:28:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:35,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:35,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:35,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:28:35,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:35,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 10:28:35,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:35,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:35,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:35,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 10:28:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:28:35,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 10:28:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:35,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:35,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:35,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:28:35,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:35,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:28:35,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:35,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 10:28:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:35,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:35,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 10:28:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:35,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:35,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:28:35,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:28:35,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:28:35,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:28:35,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:28:35,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:28:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:28:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 10:28:35,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:28:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:28:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 159 proven. 106 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-28 10:28:35,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027856269] [2020-10-28 10:28:35,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:28:35,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:28:35,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608197464] [2020-10-28 10:28:35,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:28:35,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:28:35,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:28:35,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:28:35,656 INFO L87 Difference]: Start difference. First operand 52057 states and 71926 transitions. Second operand 8 states. [2020-10-28 10:28:50,773 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:28:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:28:54,380 INFO L93 Difference]: Finished difference Result 160542 states and 227804 transitions. [2020-10-28 10:28:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 10:28:54,381 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 960 [2020-10-28 10:28:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:28:55,148 INFO L225 Difference]: With dead ends: 160542 [2020-10-28 10:28:55,148 INFO L226 Difference]: Without dead ends: 108491 [2020-10-28 10:28:55,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:28:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108491 states. [2020-10-28 10:28:57,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108491 to 103406. [2020-10-28 10:28:57,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103406 states. [2020-10-28 10:28:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103406 states to 103406 states and 134188 transitions. [2020-10-28 10:28:58,312 INFO L78 Accepts]: Start accepts. Automaton has 103406 states and 134188 transitions. Word has length 960 [2020-10-28 10:28:58,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:28:58,319 INFO L481 AbstractCegarLoop]: Abstraction has 103406 states and 134188 transitions. [2020-10-28 10:28:58,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:28:58,319 INFO L276 IsEmpty]: Start isEmpty. Operand 103406 states and 134188 transitions. [2020-10-28 10:28:58,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1162 [2020-10-28 10:28:58,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:28:58,622 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:28:58,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:28:58,622 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:28:58,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:28:58,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1987793076, now seen corresponding path program 1 times [2020-10-28 10:28:58,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:28:58,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284296144] [2020-10-28 10:28:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:28:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:28:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:59,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:28:59,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:00,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:04,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:04,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1189 [2020-10-28 10:29:04,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:29:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5122 [2020-10-28 10:29:04,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:04,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:29:04,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-28 10:29:04,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-28 10:29:04,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:29:04,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:29:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:04,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:04,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:04,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:29:04,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:04,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:29:04,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:04,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:29:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:29:04,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:04,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:29:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:04,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:04,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:29:04,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:29:04,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:04,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:29:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:29:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:04,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:29:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:04,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:04,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:04,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 10:29:04,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:04,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:29:04,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:04,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:29:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:04,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:29:04,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 10:29:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:04,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:04,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:04,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:29:04,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:04,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:29:04,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:04,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:04,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:29:04,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:04,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 10:29:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:04,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 10:29:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:04,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:04,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:04,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 10:29:04,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:04,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 10:29:04,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:04,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:29:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:29:04,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-28 10:29:04,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:05,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-10-28 10:29:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:05,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:05,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:05,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:29:05,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:05,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:29:05,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:05,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:29:05,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 10:29:05,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:29:05,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-28 10:29:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:05,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:05,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:05,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:29:05,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:05,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 10:29:05,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:05,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:29:05,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 10:29:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:29:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 502 proven. 69 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-28 10:29:06,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284296144] [2020-10-28 10:29:06,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:29:06,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:29:06,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520989940] [2020-10-28 10:29:06,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:29:06,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:29:06,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:29:06,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:29:06,255 INFO L87 Difference]: Start difference. First operand 103406 states and 134188 transitions. Second operand 7 states. [2020-10-28 10:29:06,526 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 10:29:13,491 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-28 10:29:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:29:21,549 INFO L93 Difference]: Finished difference Result 221391 states and 290293 transitions. [2020-10-28 10:29:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:29:21,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1161 [2020-10-28 10:29:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:29:22,031 INFO L225 Difference]: With dead ends: 221391 [2020-10-28 10:29:22,031 INFO L226 Difference]: Without dead ends: 117991 [2020-10-28 10:29:22,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:29:22,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117991 states. [2020-10-28 10:29:24,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117991 to 117015. [2020-10-28 10:29:24,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117015 states. [2020-10-28 10:29:24,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117015 states to 117015 states and 150742 transitions. [2020-10-28 10:29:24,505 INFO L78 Accepts]: Start accepts. Automaton has 117015 states and 150742 transitions. Word has length 1161 [2020-10-28 10:29:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:29:24,506 INFO L481 AbstractCegarLoop]: Abstraction has 117015 states and 150742 transitions. [2020-10-28 10:29:24,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:29:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 117015 states and 150742 transitions. [2020-10-28 10:29:25,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2020-10-28 10:29:25,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:29:25,071 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:29:25,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:29:25,071 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:29:25,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:29:25,072 INFO L82 PathProgramCache]: Analyzing trace with hash 711783948, now seen corresponding path program 1 times [2020-10-28 10:29:25,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:29:25,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236083990] [2020-10-28 10:29:25,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:29:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:25,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:30,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:30,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1303 [2020-10-28 10:29:30,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:29:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 10:29:30,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:30,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:29:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-28 10:29:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 10:29:30,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:30,688 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:29:30,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:29:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:30,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:30,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:29:30,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:30,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:29:30,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:30,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:30,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:29:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:30,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:29:30,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:29:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:30,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:30,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:30,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:29:30,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:30,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:29:30,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:30,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:29:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:30,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:29:30,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:30,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:29:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:30,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:30,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:30,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 10:29:30,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:30,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 10:29:30,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:30,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:30,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:29:30,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:30,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 10:29:30,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:30,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 10:29:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:30,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:30,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:29:30,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:30,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:29:30,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:30,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:29:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:29:30,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 10:29:30,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:30,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-28 10:29:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:31,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:31,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:31,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-28 10:29:31,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:31,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 10:29:31,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:31,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:31,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:29:31,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 313 [2020-10-28 10:29:31,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:29:31,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:31,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:29:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:29:31,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:29:31,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:29:31,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 10:29:31,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:29:31,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 10:29:31,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:29:31,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:29:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:29:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:29:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:29:31,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:29:32,044 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 530 proven. 30 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-28 10:29:32,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236083990] [2020-10-28 10:29:32,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:29:32,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:29:32,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241548870] [2020-10-28 10:29:32,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:29:32,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:29:32,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:29:32,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:29:32,047 INFO L87 Difference]: Start difference. First operand 117015 states and 150742 transitions. Second operand 7 states. [2020-10-28 10:29:32,356 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93