/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:42:47,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:42:47,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:42:47,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:42:47,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:42:47,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:42:47,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:42:47,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:42:47,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:42:48,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:42:48,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:42:48,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:42:48,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:42:48,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:42:48,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:42:48,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:42:48,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:42:48,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:42:48,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:42:48,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:42:48,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:42:48,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:42:48,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:42:48,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:42:48,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:42:48,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:42:48,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:42:48,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:42:48,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:42:48,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:42:48,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:42:48,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:42:48,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:42:48,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:42:48,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:42:48,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:42:48,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:42:48,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:42:48,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:42:48,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:42:48,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:42:48,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 17:42:48,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:42:48,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:42:48,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:42:48,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:42:48,134 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:42:48,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:42:48,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:42:48,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:42:48,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:42:48,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:42:48,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:42:48,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:42:48,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:42:48,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:42:48,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:42:48,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:42:48,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:42:48,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:42:48,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:42:48,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:42:48,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:42:48,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:42:48,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:42:48,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:42:48,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:42:48,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:42:48,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:42:48,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:42:48,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:42:48,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:42:48,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:42:48,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:42:48,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:42:48,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:42:48,576 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:42:48,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label21.c [2020-10-27 17:42:48,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcaaa0617/299eae45da9641bdaa1e5a9fbe3de995/FLAGf3016682a [2020-10-27 17:42:49,759 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:42:49,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label21.c [2020-10-27 17:42:49,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcaaa0617/299eae45da9641bdaa1e5a9fbe3de995/FLAGf3016682a [2020-10-27 17:42:50,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcaaa0617/299eae45da9641bdaa1e5a9fbe3de995 [2020-10-27 17:42:50,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:42:50,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:42:50,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:42:50,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:42:50,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:42:50,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:50" (1/1) ... [2020-10-27 17:42:50,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e730c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:50, skipping insertion in model container [2020-10-27 17:42:50,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:42:50" (1/1) ... [2020-10-27 17:42:50,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:42:50,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:42:51,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:42:51,751 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:42:52,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:42:52,530 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:42:52,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:52 WrapperNode [2020-10-27 17:42:52,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:42:52,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:42:52,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:42:52,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:42:52,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:52" (1/1) ... [2020-10-27 17:42:52,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:52" (1/1) ... [2020-10-27 17:42:52,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:52" (1/1) ... [2020-10-27 17:42:52,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:52" (1/1) ... [2020-10-27 17:42:52,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:52" (1/1) ... [2020-10-27 17:42:52,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:52" (1/1) ... [2020-10-27 17:42:52,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:52" (1/1) ... [2020-10-27 17:42:52,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:42:52,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:42:52,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:42:52,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:42:52,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:42:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:42:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:42:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:42:53,124 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:42:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:42:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:42:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:42:53,125 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:42:53,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:42:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:42:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:42:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:42:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:42:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:42:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:42:53,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:42:53,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:42:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:42:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:42:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:42:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:42:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:42:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:42:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:42:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:42:58,781 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:42:58,782 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:42:58,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:58 BoogieIcfgContainer [2020-10-27 17:42:58,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:42:58,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:42:58,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:42:58,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:42:58,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:42:50" (1/3) ... [2020-10-27 17:42:58,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe18905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:58, skipping insertion in model container [2020-10-27 17:42:58,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:42:52" (2/3) ... [2020-10-27 17:42:58,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe18905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:42:58, skipping insertion in model container [2020-10-27 17:42:58,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:42:58" (3/3) ... [2020-10-27 17:42:58,801 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label21.c [2020-10-27 17:42:58,817 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:42:58,825 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:42:58,840 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:42:58,894 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:42:58,894 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:42:58,894 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:42:58,894 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:42:58,894 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:42:58,895 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:42:58,895 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:42:58,895 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:42:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:42:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-27 17:42:58,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:42:58,942 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] [2020-10-27 17:42:58,943 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:42:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:42:58,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1569486748, now seen corresponding path program 1 times [2020-10-27 17:42:58,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:42:58,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024819634] [2020-10-27 17:42:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:42:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:59,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:59,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:59,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 17:42:59,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:59,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-27 17:42:59,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:42:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:42:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 17:42:59,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:42:59,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:42:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:42:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:42:59,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:42:59,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:42:59,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:42:59,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 17:42:59,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:42:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:42:59,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:42:59,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:42:59,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:42:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:42:59,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024819634] [2020-10-27 17:42:59,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:42:59,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:42:59,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888973839] [2020-10-27 17:42:59,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:42:59,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:42:59,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:42:59,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:42:59,936 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:43:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:11,144 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-27 17:43:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:43:11,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-27 17:43:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:11,189 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:43:11,189 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:43:11,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:11,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:43:11,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:43:11,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:43:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-27 17:43:11,380 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 29 [2020-10-27 17:43:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:11,381 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-27 17:43:11,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:43:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-27 17:43:11,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-27 17:43:11,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:11,387 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:43:11,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:43:11,387 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:11,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1354067749, now seen corresponding path program 1 times [2020-10-27 17:43:11,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:11,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792590639] [2020-10-27 17:43:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:11,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:12,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:12,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 17:43:12,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:43:12,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-27 17:43:12,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:43:12,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 17:43:12,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:43:12,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:12,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:12,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:12,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:12,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:12,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 17:43:12,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:12,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:43:12,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:12,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:12,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:43:12,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:12,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 17:43:12,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:12,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:43:12,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:43:12,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792590639] [2020-10-27 17:43:12,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:12,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:12,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569770055] [2020-10-27 17:43:12,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:12,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:12,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:12,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:12,843 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 5 states. [2020-10-27 17:43:23,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:23,843 INFO L93 Difference]: Finished difference Result 4673 states and 7650 transitions. [2020-10-27 17:43:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:43:23,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-27 17:43:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:23,866 INFO L225 Difference]: With dead ends: 4673 [2020-10-27 17:43:23,866 INFO L226 Difference]: Without dead ends: 3125 [2020-10-27 17:43:23,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:43:23,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-27 17:43:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3112. [2020-10-27 17:43:23,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2020-10-27 17:43:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4442 transitions. [2020-10-27 17:43:24,012 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4442 transitions. Word has length 104 [2020-10-27 17:43:24,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:24,013 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 4442 transitions. [2020-10-27 17:43:24,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:43:24,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4442 transitions. [2020-10-27 17:43:24,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 17:43:24,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:24,016 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:43:24,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:43:24,017 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:24,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:24,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1839809325, now seen corresponding path program 1 times [2020-10-27 17:43:24,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:24,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1977606744] [2020-10-27 17:43:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:24,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:24,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:25,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:25,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 17:43:25,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:43:25,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1326 [2020-10-27 17:43:25,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 17:43:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 17:43:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:25,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:25,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:25,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:25,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:25,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:25,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:43:25,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:25,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:25,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:25,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:25,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:25,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:43:25,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 17:43:25,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 17:43:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:43:25,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1977606744] [2020-10-27 17:43:25,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:25,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:25,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383324058] [2020-10-27 17:43:25,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:25,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:25,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:25,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:25,774 INFO L87 Difference]: Start difference. First operand 3112 states and 4442 transitions. Second operand 5 states. [2020-10-27 17:43:38,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:38,303 INFO L93 Difference]: Finished difference Result 7787 states and 11483 transitions. [2020-10-27 17:43:38,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:43:38,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-27 17:43:38,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:38,339 INFO L225 Difference]: With dead ends: 7787 [2020-10-27 17:43:38,339 INFO L226 Difference]: Without dead ends: 4681 [2020-10-27 17:43:38,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:43:38,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-27 17:43:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4677. [2020-10-27 17:43:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4677 states. [2020-10-27 17:43:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4677 states to 4677 states and 6449 transitions. [2020-10-27 17:43:38,489 INFO L78 Accepts]: Start accepts. Automaton has 4677 states and 6449 transitions. Word has length 108 [2020-10-27 17:43:38,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:38,490 INFO L481 AbstractCegarLoop]: Abstraction has 4677 states and 6449 transitions. [2020-10-27 17:43:38,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:43:38,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4677 states and 6449 transitions. [2020-10-27 17:43:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-27 17:43:38,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:38,495 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:43:38,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:43:38,496 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:38,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1641341832, now seen corresponding path program 1 times [2020-10-27 17:43:38,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:38,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900632916] [2020-10-27 17:43:38,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:38,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:38,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:40,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:42,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:42,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-27 17:43:42,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:43:42,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4066 [2020-10-27 17:43:42,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:42,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:42,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-27 17:43:42,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 17:43:42,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:42,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:42,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:42,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:42,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:42,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:42,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:43:42,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:42,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:42,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:42,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:42,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:42,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 17:43:42,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:42,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:43:42,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:42,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:42,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 17:43:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:42,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:42,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 17:43:42,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:42,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 17:43:42,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:42,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:42,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:42,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 17:43:42,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-27 17:43:42,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900632916] [2020-10-27 17:43:42,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:42,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:42,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774922628] [2020-10-27 17:43:42,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:42,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:42,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:42,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:42,985 INFO L87 Difference]: Start difference. First operand 4677 states and 6449 transitions. Second operand 5 states. [2020-10-27 17:43:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:43:57,462 INFO L93 Difference]: Finished difference Result 14011 states and 19653 transitions. [2020-10-27 17:43:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:43:57,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-27 17:43:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:43:57,565 INFO L225 Difference]: With dead ends: 14011 [2020-10-27 17:43:57,566 INFO L226 Difference]: Without dead ends: 9340 [2020-10-27 17:43:57,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:43:57,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9340 states. [2020-10-27 17:43:57,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9340 to 9336. [2020-10-27 17:43:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9336 states. [2020-10-27 17:43:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9336 states to 9336 states and 12178 transitions. [2020-10-27 17:43:57,834 INFO L78 Accepts]: Start accepts. Automaton has 9336 states and 12178 transitions. Word has length 181 [2020-10-27 17:43:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:43:57,835 INFO L481 AbstractCegarLoop]: Abstraction has 9336 states and 12178 transitions. [2020-10-27 17:43:57,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:43:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 9336 states and 12178 transitions. [2020-10-27 17:43:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-27 17:43:57,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:43:57,839 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 17:43:57,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:43:57,840 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:43:57,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:43:57,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1687581247, now seen corresponding path program 1 times [2020-10-27 17:43:57,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:43:57,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67704362] [2020-10-27 17:43:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:43:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:57,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:59,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:59,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:59,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 17:43:59,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:43:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1460 [2020-10-27 17:43:59,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:43:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-27 17:43:59,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 17:43:59,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:59,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:43:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:59,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:59,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:59,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:43:59,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:43:59,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:43:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:59,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:43:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:59,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:43:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:43:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:43:59,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:43:59,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 17:43:59,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:43:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 17:43:59,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:43:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:43:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:43:59,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-27 17:43:59,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:43:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:43:59,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67704362] [2020-10-27 17:43:59,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:43:59,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:43:59,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905399035] [2020-10-27 17:43:59,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:43:59,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:43:59,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:43:59,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:43:59,836 INFO L87 Difference]: Start difference. First operand 9336 states and 12178 transitions. Second operand 5 states. [2020-10-27 17:44:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:14,970 INFO L93 Difference]: Finished difference Result 23323 states and 31221 transitions. [2020-10-27 17:44:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:44:14,972 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-27 17:44:14,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:15,050 INFO L225 Difference]: With dead ends: 23323 [2020-10-27 17:44:15,051 INFO L226 Difference]: Without dead ends: 13993 [2020-10-27 17:44:15,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:44:15,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13993 states. [2020-10-27 17:44:15,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13993 to 13986. [2020-10-27 17:44:15,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13986 states. [2020-10-27 17:44:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13986 states to 13986 states and 17912 transitions. [2020-10-27 17:44:15,459 INFO L78 Accepts]: Start accepts. Automaton has 13986 states and 17912 transitions. Word has length 182 [2020-10-27 17:44:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:44:15,459 INFO L481 AbstractCegarLoop]: Abstraction has 13986 states and 17912 transitions. [2020-10-27 17:44:15,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:44:15,460 INFO L276 IsEmpty]: Start isEmpty. Operand 13986 states and 17912 transitions. [2020-10-27 17:44:15,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-27 17:44:15,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:15,466 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:44:15,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:44:15,467 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:15,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:15,468 INFO L82 PathProgramCache]: Analyzing trace with hash -704182594, now seen corresponding path program 1 times [2020-10-27 17:44:15,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:15,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312132246] [2020-10-27 17:44:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:15,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:15,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:16,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:17,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:17,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-27 17:44:17,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:44:17,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1593 [2020-10-27 17:44:17,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:17,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:44:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-27 17:44:17,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 17:44:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:17,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:17,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:17,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:17,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:17,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:17,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 17:44:17,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:17,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:17,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:17,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:17,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:17,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:44:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:17,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:17,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:17,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:44:17,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 17:44:17,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:17,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:44:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:17,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:17,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:17,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 17:44:17,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:17,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-27 17:44:17,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 17:44:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 17:44:17,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312132246] [2020-10-27 17:44:17,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:44:17,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:44:17,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336119071] [2020-10-27 17:44:17,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:44:17,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:17,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:44:17,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:44:17,665 INFO L87 Difference]: Start difference. First operand 13986 states and 17912 transitions. Second operand 6 states. [2020-10-27 17:44:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:44:42,534 INFO L93 Difference]: Finished difference Result 55111 states and 73666 transitions. [2020-10-27 17:44:42,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:44:42,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2020-10-27 17:44:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:44:42,732 INFO L225 Difference]: With dead ends: 55111 [2020-10-27 17:44:42,732 INFO L226 Difference]: Without dead ends: 41131 [2020-10-27 17:44:42,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:44:42,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41131 states. [2020-10-27 17:44:44,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41131 to 38821. [2020-10-27 17:44:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38821 states. [2020-10-27 17:44:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38821 states to 38821 states and 51142 transitions. [2020-10-27 17:44:44,141 INFO L78 Accepts]: Start accepts. Automaton has 38821 states and 51142 transitions. Word has length 228 [2020-10-27 17:44:44,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:44:44,141 INFO L481 AbstractCegarLoop]: Abstraction has 38821 states and 51142 transitions. [2020-10-27 17:44:44,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:44:44,142 INFO L276 IsEmpty]: Start isEmpty. Operand 38821 states and 51142 transitions. [2020-10-27 17:44:44,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-27 17:44:44,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:44,156 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:44:44,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:44:44,157 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:44,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:44,157 INFO L82 PathProgramCache]: Analyzing trace with hash -692562624, now seen corresponding path program 1 times [2020-10-27 17:44:44,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:44,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689196685] [2020-10-27 17:44:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:44,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:46,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:46,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:49,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:49,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-27 17:44:49,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:44:49,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 17:44:49,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:44:49,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 17:44:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 17:44:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:44:49,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:44:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:49,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:49,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:49,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:44:49,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:49,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:44:49,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:49,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:49,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:49,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:49,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:44:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:49,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:49,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 17:44:49,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 17:44:49,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:44:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:44:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-27 17:44:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:44:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:44:49,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:44:49,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 17:44:49,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:44:49,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 17:44:49,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:44:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:44:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:44:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 17:44:49,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:44:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 17:44:49,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689196685] [2020-10-27 17:44:49,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:44:49,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:44:49,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438518838] [2020-10-27 17:44:49,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:44:49,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:44:49,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:44:49,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:44:49,889 INFO L87 Difference]: Start difference. First operand 38821 states and 51142 transitions. Second operand 5 states. [2020-10-27 17:45:08,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:08,298 INFO L93 Difference]: Finished difference Result 89260 states and 121356 transitions. [2020-10-27 17:45:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:45:08,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-27 17:45:08,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:08,570 INFO L225 Difference]: With dead ends: 89260 [2020-10-27 17:45:08,570 INFO L226 Difference]: Without dead ends: 50445 [2020-10-27 17:45:08,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:45:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50445 states. [2020-10-27 17:45:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50445 to 46592. [2020-10-27 17:45:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46592 states. [2020-10-27 17:45:10,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46592 states to 46592 states and 60710 transitions. [2020-10-27 17:45:10,632 INFO L78 Accepts]: Start accepts. Automaton has 46592 states and 60710 transitions. Word has length 269 [2020-10-27 17:45:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:10,633 INFO L481 AbstractCegarLoop]: Abstraction has 46592 states and 60710 transitions. [2020-10-27 17:45:10,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:45:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 46592 states and 60710 transitions. [2020-10-27 17:45:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-27 17:45:10,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:10,653 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:45:10,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:45:10,654 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:10,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:10,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1057147814, now seen corresponding path program 1 times [2020-10-27 17:45:10,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:10,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571972765] [2020-10-27 17:45:10,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:11,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:11,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:12,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:15,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:15,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 17:45:15,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:45:15,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4850 [2020-10-27 17:45:15,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:15,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:15,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 268 [2020-10-27 17:45:15,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 17:45:15,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:16,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:16,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:16,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:16,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:16,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:16,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 17:45:16,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:16,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:16,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:16,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:16,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:16,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:16,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:16,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 17:45:16,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:16,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 17:45:16,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:16,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:16,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:16,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-27 17:45:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:16,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:16,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:16,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 17:45:16,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:16,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 17:45:16,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:16,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:16,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:16,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 17:45:16,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-27 17:45:16,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571972765] [2020-10-27 17:45:16,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:16,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:45:16,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708208268] [2020-10-27 17:45:16,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:45:16,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:16,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:45:16,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:45:16,544 INFO L87 Difference]: Start difference. First operand 46592 states and 60710 transitions. Second operand 5 states. [2020-10-27 17:45:17,279 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:45:38,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:38,853 INFO L93 Difference]: Finished difference Result 121025 states and 162766 transitions. [2020-10-27 17:45:38,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:45:38,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-10-27 17:45:38,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:39,161 INFO L225 Difference]: With dead ends: 121025 [2020-10-27 17:45:39,162 INFO L226 Difference]: Without dead ends: 74439 [2020-10-27 17:45:39,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:45:39,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74439 states. [2020-10-27 17:45:41,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74439 to 70595. [2020-10-27 17:45:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70595 states. [2020-10-27 17:45:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70595 states to 70595 states and 89253 transitions. [2020-10-27 17:45:41,663 INFO L78 Accepts]: Start accepts. Automaton has 70595 states and 89253 transitions. Word has length 285 [2020-10-27 17:45:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:41,663 INFO L481 AbstractCegarLoop]: Abstraction has 70595 states and 89253 transitions. [2020-10-27 17:45:41,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:45:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 70595 states and 89253 transitions. [2020-10-27 17:45:41,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-27 17:45:41,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:41,902 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:45:41,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:45:41,904 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:41,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:41,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1750893339, now seen corresponding path program 1 times [2020-10-27 17:45:41,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:41,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119617044] [2020-10-27 17:45:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:42,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:43,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:47,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:47,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-27 17:45:47,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:45:47,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 17:45:47,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:45:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-27 17:45:47,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 360 [2020-10-27 17:45:47,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:47,375 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:45:47,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:47,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:47,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:47,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:47,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:47,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:45:47,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:47,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:47,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:47,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:47,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:47,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 17:45:47,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:47,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 17:45:47,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:47,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:47,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 17:45:47,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:47,843 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-10-27 17:45:47,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-27 17:45:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:48,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:51,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:51,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-27 17:45:51,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:45:51,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3403 [2020-10-27 17:45:51,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:51,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:45:51,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:45:51,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 361 [2020-10-27 17:45:51,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:51,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:45:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:51,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:52,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:52,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:45:52,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:52,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 17:45:52,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:52,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:45:52,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:45:52,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 17:45:52,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:45:53,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119617044] [2020-10-27 17:45:53,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:53,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 17:45:53,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25606407] [2020-10-27 17:45:53,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 17:45:53,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:53,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 17:45:53,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-27 17:45:53,087 INFO L87 Difference]: Start difference. First operand 70595 states and 89253 transitions. Second operand 10 states. [2020-10-27 17:45:54,764 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-27 17:46:08,452 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 17:46:09,873 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 17:46:18,605 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 80