/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem16_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:02:46,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:02:46,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:02:46,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:02:46,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:02:46,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:02:46,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:02:46,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:02:46,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:02:46,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:02:46,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:02:46,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:02:46,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:02:46,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:02:46,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:02:46,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:02:46,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:02:46,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:02:46,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:02:46,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:02:46,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:02:46,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:02:46,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:02:46,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:02:46,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:02:46,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:02:46,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:02:46,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:02:46,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:02:46,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:02:46,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:02:46,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:02:46,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:02:46,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:02:46,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:02:46,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:02:46,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:02:46,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:02:46,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:02:46,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:02:46,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:02:46,947 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 [2020-10-29 08:02:47,003 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:02:47,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:02:47,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:02:47,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:02:47,010 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:02:47,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:02:47,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:02:47,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:02:47,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:02:47,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:02:47,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:02:47,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:02:47,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:02:47,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:02:47,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:02:47,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:02:47,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:02:47,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:02:47,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:02:47,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:02:47,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:02:47,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:02:47,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:02:47,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:02:47,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:02:47,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:02:47,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:02:47,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:02:47,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:02:47,016 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:02:47,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:02:47,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:02:47,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:02:47,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:02:47,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:02:47,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30.c [2020-10-29 08:02:47,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08383760f/33042826e39f4a15b5ef850cca6b4e82/FLAGd6a90cfb1 [2020-10-29 08:02:48,467 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:02:48,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label30.c [2020-10-29 08:02:48,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08383760f/33042826e39f4a15b5ef850cca6b4e82/FLAGd6a90cfb1 [2020-10-29 08:02:48,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08383760f/33042826e39f4a15b5ef850cca6b4e82 [2020-10-29 08:02:48,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:02:48,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:02:48,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:02:48,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:02:48,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:02:48,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:02:48" (1/1) ... [2020-10-29 08:02:48,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f4249b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:48, skipping insertion in model container [2020-10-29 08:02:48,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:02:48" (1/1) ... [2020-10-29 08:02:48,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:02:48,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:02:49,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:02:49,643 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:02:49,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:02:49,917 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:02:49,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:49 WrapperNode [2020-10-29 08:02:49,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:02:49,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:02:49,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:02:49,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:02:49,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:49" (1/1) ... [2020-10-29 08:02:49,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:49" (1/1) ... [2020-10-29 08:02:49,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:49" (1/1) ... [2020-10-29 08:02:49,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:49" (1/1) ... [2020-10-29 08:02:50,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:49" (1/1) ... [2020-10-29 08:02:50,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:49" (1/1) ... [2020-10-29 08:02:50,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:49" (1/1) ... [2020-10-29 08:02:50,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:02:50,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:02:50,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:02:50,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:02:50,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:49" (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 [2020-10-29 08:02:50,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:02:50,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:02:50,267 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:02:50,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:02:50,268 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:02:50,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:02:50,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:02:50,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:02:50,270 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:02:50,271 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:02:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:02:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:02:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:02:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:02:50,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:02:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:02:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:02:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:02:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:02:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:02:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:02:53,109 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:02:53,109 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:02:53,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:02:53 BoogieIcfgContainer [2020-10-29 08:02:53,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:02:53,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:02:53,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:02:53,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:02:53,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:02:48" (1/3) ... [2020-10-29 08:02:53,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167dc9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:02:53, skipping insertion in model container [2020-10-29 08:02:53,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:02:49" (2/3) ... [2020-10-29 08:02:53,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167dc9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:02:53, skipping insertion in model container [2020-10-29 08:02:53,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:02:53" (3/3) ... [2020-10-29 08:02:53,123 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label30.c [2020-10-29 08:02:53,137 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:02:53,144 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:02:53,159 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:02:53,192 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:02:53,192 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:02:53,192 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:02:53,192 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:02:53,192 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:02:53,193 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:02:53,193 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:02:53,193 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:02:53,222 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-29 08:02:53,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 08:02:53,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:53,230 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] [2020-10-29 08:02:53,230 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:53,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:53,237 INFO L82 PathProgramCache]: Analyzing trace with hash 392533356, now seen corresponding path program 1 times [2020-10-29 08:02:53,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:53,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866948926] [2020-10-29 08:02:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:53,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:53,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 08:02:53,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:53,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-29 08:02:53,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:53,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:53,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:02:53,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:02:53,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 08:02:53,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:02:54,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:02:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:54,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:02:54,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:02:54,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:02:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 08:02:54,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:02:54,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:02:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:02:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:02:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:02:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:02:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:02:54,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866948926] [2020-10-29 08:02:54,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:02:54,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:02:54,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747193981] [2020-10-29 08:02:54,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:02:54,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:02:54,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:02:54,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:02:54,202 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-29 08:02:59,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:02:59,074 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-29 08:02:59,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:02:59,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-29 08:02:59,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:02:59,099 INFO L225 Difference]: With dead ends: 1174 [2020-10-29 08:02:59,099 INFO L226 Difference]: Without dead ends: 697 [2020-10-29 08:02:59,113 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 [2020-10-29 08:02:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-29 08:02:59,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-29 08:02:59,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-29 08:02:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-29 08:02:59,261 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 22 [2020-10-29 08:02:59,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:02:59,261 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-29 08:02:59,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:02:59,262 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-29 08:02:59,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 08:02:59,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:02:59,270 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 08:02:59,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:02:59,270 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:02:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:02:59,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1032836852, now seen corresponding path program 1 times [2020-10-29 08:02:59,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:02:59,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724797276] [2020-10-29 08:02:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:02:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:02:59,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:02:59,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:00,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:00,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 08:03:00,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:03:00,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-29 08:03:00,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:00,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:03:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:03:00,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:03:00,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:00,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:00,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:00,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:00,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:00,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:00,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:03:00,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:00,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:00,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:00,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:00,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:03:00,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:00,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:00,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:00,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:00,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:03:00,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:00,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 08:03:00,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:00,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:00,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 08:03:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:03:00,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724797276] [2020-10-29 08:03:00,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:03:00,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:03:00,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078242238] [2020-10-29 08:03:00,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:03:00,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:00,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:03:00,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:00,913 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-29 08:03:06,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:06,126 INFO L93 Difference]: Finished difference Result 2081 states and 3078 transitions. [2020-10-29 08:03:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:03:06,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-29 08:03:06,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:06,142 INFO L225 Difference]: With dead ends: 2081 [2020-10-29 08:03:06,142 INFO L226 Difference]: Without dead ends: 1394 [2020-10-29 08:03:06,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:03:06,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-10-29 08:03:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1386. [2020-10-29 08:03:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1386 states. [2020-10-29 08:03:06,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1822 transitions. [2020-10-29 08:03:06,211 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1822 transitions. Word has length 98 [2020-10-29 08:03:06,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:06,212 INFO L481 AbstractCegarLoop]: Abstraction has 1386 states and 1822 transitions. [2020-10-29 08:03:06,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:03:06,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1822 transitions. [2020-10-29 08:03:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-29 08:03:06,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:06,220 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:06,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:03:06,221 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:06,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:06,221 INFO L82 PathProgramCache]: Analyzing trace with hash 627225690, now seen corresponding path program 1 times [2020-10-29 08:03:06,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:06,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898317765] [2020-10-29 08:03:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:06,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:06,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:07,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:07,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:08,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:10,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:10,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-29 08:03:10,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 08:03:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4112 [2020-10-29 08:03:10,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:10,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:03:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:03:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 08:03:10,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:10,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:10,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:10,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:10,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:10,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:10,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:03:10,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:10,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:10,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:03:10,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:10,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:10,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:10,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:10,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 08:03:10,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:03:10,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 08:03:10,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:10,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:10,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:10,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 08:03:10,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 08:03:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:11,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:11,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:03:11,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:11,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 08:03:11,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:11,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 08:03:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:03:11,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898317765] [2020-10-29 08:03:11,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:11,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:03:11,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772137846] [2020-10-29 08:03:11,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:03:11,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:11,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:03:11,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:11,262 INFO L87 Difference]: Start difference. First operand 1386 states and 1822 transitions. Second operand 7 states. [2020-10-29 08:03:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:16,789 INFO L93 Difference]: Finished difference Result 3482 states and 4740 transitions. [2020-10-29 08:03:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:03:16,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-10-29 08:03:16,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:16,804 INFO L225 Difference]: With dead ends: 3482 [2020-10-29 08:03:16,804 INFO L226 Difference]: Without dead ends: 2102 [2020-10-29 08:03:16,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:03:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2020-10-29 08:03:16,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2087. [2020-10-29 08:03:16,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2087 states. [2020-10-29 08:03:16,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2696 transitions. [2020-10-29 08:03:16,883 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2696 transitions. Word has length 185 [2020-10-29 08:03:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:16,884 INFO L481 AbstractCegarLoop]: Abstraction has 2087 states and 2696 transitions. [2020-10-29 08:03:16,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:03:16,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2696 transitions. [2020-10-29 08:03:16,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 08:03:16,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:16,888 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:16,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:03:16,889 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:16,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:16,889 INFO L82 PathProgramCache]: Analyzing trace with hash 270973652, now seen corresponding path program 1 times [2020-10-29 08:03:16,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:16,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965784713] [2020-10-29 08:03:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:16,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:18,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:20,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:20,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 08:03:20,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:03:20,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3269 [2020-10-29 08:03:20,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:20,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:20,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 08:03:20,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:03:20,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-29 08:03:20,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:20,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:20,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:20,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:20,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:20,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:20,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:03:20,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:20,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:20,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:03:20,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:20,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:20,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:20,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:20,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:20,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 08:03:20,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:03:20,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-29 08:03:20,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:20,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:20,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:20,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:20,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 08:03:20,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:20,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 08:03:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:20,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:20,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:21,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:21,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 08:03:21,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:03:21,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-29 08:03:21,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:21,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:21,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-29 08:03:21,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 08:03:21,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965784713] [2020-10-29 08:03:21,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:21,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:03:21,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978976484] [2020-10-29 08:03:21,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:03:21,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:21,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:03:21,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:21,216 INFO L87 Difference]: Start difference. First operand 2087 states and 2696 transitions. Second operand 7 states. [2020-10-29 08:03:31,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:31,686 INFO L93 Difference]: Finished difference Result 5559 states and 7148 transitions. [2020-10-29 08:03:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:03:31,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-29 08:03:31,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:31,708 INFO L225 Difference]: With dead ends: 5559 [2020-10-29 08:03:31,708 INFO L226 Difference]: Without dead ends: 3478 [2020-10-29 08:03:31,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:03:31,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3478 states. [2020-10-29 08:03:31,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3478 to 3123. [2020-10-29 08:03:31,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3123 states. [2020-10-29 08:03:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 3983 transitions. [2020-10-29 08:03:31,830 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 3983 transitions. Word has length 248 [2020-10-29 08:03:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:31,831 INFO L481 AbstractCegarLoop]: Abstraction has 3123 states and 3983 transitions. [2020-10-29 08:03:31,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:03:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 3983 transitions. [2020-10-29 08:03:31,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-10-29 08:03:31,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:31,846 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:03:31,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:03:31,846 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:31,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:31,847 INFO L82 PathProgramCache]: Analyzing trace with hash 741629988, now seen corresponding path program 1 times [2020-10-29 08:03:31,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:31,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906424147] [2020-10-29 08:03:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:31,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:32,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:32,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:33,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:34,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:35,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:36,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:36,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:36,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-29 08:03:36,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 08:03:36,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-29 08:03:36,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:36,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:03:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-29 08:03:36,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-29 08:03:36,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:37,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:37,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:37,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:37,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:37,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:03:37,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:37,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:37,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:37,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:37,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:37,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:37,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 08:03:37,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:37,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 08:03:37,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:37,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 08:03:37,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:37,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-29 08:03:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:37,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:37,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:37,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:37,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-29 08:03:37,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:03:37,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-29 08:03:37,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:37,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:37,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:37,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:37,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 08:03:37,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:37,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-29 08:03:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:37,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:38,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:38,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:03:38,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:38,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 08:03:38,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:38,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:38,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 08:03:38,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:38,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-29 08:03:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:38,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:38,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:38,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:03:38,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:38,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 08:03:38,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:38,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:38,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 08:03:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 240 proven. 320 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-29 08:03:38,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906424147] [2020-10-29 08:03:38,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:38,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:03:38,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168367749] [2020-10-29 08:03:38,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:03:38,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:38,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:03:38,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:03:38,990 INFO L87 Difference]: Start difference. First operand 3123 states and 3983 transitions. Second operand 8 states. [2020-10-29 08:03:45,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:45,367 INFO L93 Difference]: Finished difference Result 7669 states and 10033 transitions. [2020-10-29 08:03:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:03:45,369 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 470 [2020-10-29 08:03:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:45,392 INFO L225 Difference]: With dead ends: 7669 [2020-10-29 08:03:45,392 INFO L226 Difference]: Without dead ends: 3837 [2020-10-29 08:03:45,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:03:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2020-10-29 08:03:45,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 3812. [2020-10-29 08:03:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3812 states. [2020-10-29 08:03:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3812 states to 3812 states and 4181 transitions. [2020-10-29 08:03:45,520 INFO L78 Accepts]: Start accepts. Automaton has 3812 states and 4181 transitions. Word has length 470 [2020-10-29 08:03:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:45,521 INFO L481 AbstractCegarLoop]: Abstraction has 3812 states and 4181 transitions. [2020-10-29 08:03:45,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:03:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3812 states and 4181 transitions. [2020-10-29 08:03:45,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-29 08:03:45,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:45,539 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:45,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:03:45,539 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:45,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:45,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1252377110, now seen corresponding path program 1 times [2020-10-29 08:03:45,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:45,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565441352] [2020-10-29 08:03:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:49,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:50,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:50,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 603 [2020-10-29 08:03:50,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:03:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 08:03:50,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:50,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 358 [2020-10-29 08:03:50,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:03:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:03:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:50,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:50,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:50,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:03:50,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:50,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:03:50,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:50,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:50,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:50,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:03:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:50,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:50,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:50,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 08:03:50,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:03:50,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:50,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 08:03:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:51,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:51,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:51,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:03:51,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:51,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 08:03:51,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:51,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:51,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:51,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-29 08:03:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:51,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:51,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:51,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:03:51,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 08:03:51,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:51,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:03:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:03:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 08:03:51,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:51,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-29 08:03:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:51,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:51,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:03:51,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-29 08:03:51,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:51,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:03:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:03:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 08:03:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:03:51,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-29 08:03:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:51,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:03:51,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:03:51,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:03:51,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 08:03:51,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:03:51,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:03:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:03:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 08:03:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:03:51,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:03:52,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 403 proven. 106 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2020-10-29 08:03:52,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565441352] [2020-10-29 08:03:52,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:03:52,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:03:52,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732460095] [2020-10-29 08:03:52,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:03:52,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:03:52,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:03:52,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:03:52,110 INFO L87 Difference]: Start difference. First operand 3812 states and 4181 transitions. Second operand 7 states. [2020-10-29 08:03:56,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:03:56,379 INFO L93 Difference]: Finished difference Result 9352 states and 10402 transitions. [2020-10-29 08:03:56,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:03:56,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 583 [2020-10-29 08:03:56,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:03:56,407 INFO L225 Difference]: With dead ends: 9352 [2020-10-29 08:03:56,407 INFO L226 Difference]: Without dead ends: 5546 [2020-10-29 08:03:56,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:03:56,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5546 states. [2020-10-29 08:03:56,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5546 to 5522. [2020-10-29 08:03:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5522 states. [2020-10-29 08:03:56,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5522 states to 5522 states and 5983 transitions. [2020-10-29 08:03:56,569 INFO L78 Accepts]: Start accepts. Automaton has 5522 states and 5983 transitions. Word has length 583 [2020-10-29 08:03:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:03:56,570 INFO L481 AbstractCegarLoop]: Abstraction has 5522 states and 5983 transitions. [2020-10-29 08:03:56,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:03:56,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5522 states and 5983 transitions. [2020-10-29 08:03:56,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2020-10-29 08:03:56,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:03:56,598 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:03:56,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:03:56,599 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:03:56,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:03:56,599 INFO L82 PathProgramCache]: Analyzing trace with hash -311502154, now seen corresponding path program 1 times [2020-10-29 08:03:56,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:03:56,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957952978] [2020-10-29 08:03:56,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:03:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:03:56,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:57,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:57,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:57,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:03:58,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:01,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:01,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 721 [2020-10-29 08:04:01,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 08:04:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 08:04:01,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:01,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:04:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:04:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-29 08:04:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:01,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:01,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:01,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:01,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:01,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:01,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 08:04:01,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:01,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:01,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:04:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:02,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:02,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:02,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:04:02,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-29 08:04:02,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:02,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:02,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:04:02,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:02,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-29 08:04:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:02,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:02,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:02,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:04:02,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:02,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:04:02,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:02,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:02,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:02,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 08:04:02,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:02,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:02,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-29 08:04:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:02,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:02,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:04:02,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:02,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 08:04:02,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:02,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 08:04:02,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:02,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:02,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:04:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:02,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:02,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:02,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:02,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:02,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:04:02,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:02,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:02,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:02,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:04:02,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:02,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:02,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2020-10-29 08:04:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:02,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:02,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:02,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:04:02,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:02,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:04:02,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:02,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:02,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:02,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 08:04:02,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:02,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 70 proven. 410 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-10-29 08:04:03,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957952978] [2020-10-29 08:04:03,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:03,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:04:03,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628620152] [2020-10-29 08:04:03,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:04:03,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:03,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:04:03,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:04:03,443 INFO L87 Difference]: Start difference. First operand 5522 states and 5983 transitions. Second operand 7 states. [2020-10-29 08:04:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:07,374 INFO L93 Difference]: Finished difference Result 11757 states and 12749 transitions. [2020-10-29 08:04:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:04:07,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 701 [2020-10-29 08:04:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:07,402 INFO L225 Difference]: With dead ends: 11757 [2020-10-29 08:04:07,402 INFO L226 Difference]: Without dead ends: 6241 [2020-10-29 08:04:07,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:04:07,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2020-10-29 08:04:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6199. [2020-10-29 08:04:07,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6199 states. [2020-10-29 08:04:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6199 states to 6199 states and 6689 transitions. [2020-10-29 08:04:07,569 INFO L78 Accepts]: Start accepts. Automaton has 6199 states and 6689 transitions. Word has length 701 [2020-10-29 08:04:07,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:07,570 INFO L481 AbstractCegarLoop]: Abstraction has 6199 states and 6689 transitions. [2020-10-29 08:04:07,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:04:07,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6199 states and 6689 transitions. [2020-10-29 08:04:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2020-10-29 08:04:07,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:07,586 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:04:07,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:04:07,586 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:07,587 INFO L82 PathProgramCache]: Analyzing trace with hash -385143418, now seen corresponding path program 1 times [2020-10-29 08:04:07,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:07,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453904356] [2020-10-29 08:04:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:07,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:08,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:11,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:11,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:12,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:12,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 805 [2020-10-29 08:04:12,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 08:04:12,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 08:04:12,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:12,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 414 [2020-10-29 08:04:12,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-29 08:04:12,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:12,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:12,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:12,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:12,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:12,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:04:12,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:12,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:12,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:12,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:12,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:12,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:12,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:12,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:12,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:04:12,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:12,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:04:12,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:12,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:12,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:12,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:12,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:13,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:04:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:13,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:13,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:13,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 08:04:13,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:13,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 08:04:13,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:13,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:13,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:13,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:13,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 08:04:13,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:13,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-29 08:04:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:13,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:13,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:04:13,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:13,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 08:04:13,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:13,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:13,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:13,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:13,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 08:04:13,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:13,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-29 08:04:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:13,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:13,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:13,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:13,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:13,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:04:13,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:13,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:04:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:13,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:13,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2020-10-29 08:04:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:13,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:13,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:13,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:04:13,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:13,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:04:13,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:13,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 08:04:13,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:13,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 373 proven. 213 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2020-10-29 08:04:13,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453904356] [2020-10-29 08:04:13,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:13,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:04:13,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845231242] [2020-10-29 08:04:13,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:04:13,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:13,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:04:13,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:04:13,977 INFO L87 Difference]: Start difference. First operand 6199 states and 6689 transitions. Second operand 7 states. [2020-10-29 08:04:17,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:17,794 INFO L93 Difference]: Finished difference Result 13442 states and 14721 transitions. [2020-10-29 08:04:17,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:04:17,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 785 [2020-10-29 08:04:17,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:17,842 INFO L225 Difference]: With dead ends: 13442 [2020-10-29 08:04:17,843 INFO L226 Difference]: Without dead ends: 7925 [2020-10-29 08:04:17,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:04:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7925 states. [2020-10-29 08:04:18,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7925 to 7907. [2020-10-29 08:04:18,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7907 states. [2020-10-29 08:04:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7907 states to 7907 states and 8571 transitions. [2020-10-29 08:04:18,045 INFO L78 Accepts]: Start accepts. Automaton has 7907 states and 8571 transitions. Word has length 785 [2020-10-29 08:04:18,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:18,047 INFO L481 AbstractCegarLoop]: Abstraction has 7907 states and 8571 transitions. [2020-10-29 08:04:18,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:04:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 7907 states and 8571 transitions. [2020-10-29 08:04:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2020-10-29 08:04:18,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:18,073 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:04:18,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:04:18,074 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:18,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:18,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1772147724, now seen corresponding path program 1 times [2020-10-29 08:04:18,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:18,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847667425] [2020-10-29 08:04:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:18,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:23,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:23,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1114 [2020-10-29 08:04:23,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:04:23,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 08:04:23,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:23,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:04:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:04:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-29 08:04:23,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:23,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:23,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:23,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:23,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:23,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:23,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:04:23,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:23,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:04:23,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:23,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:23,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:23,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:23,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:04:23,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:04:23,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-29 08:04:23,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:23,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-29 08:04:23,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:23,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:04:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:24,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:24,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:24,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 08:04:24,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-29 08:04:24,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:24,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-29 08:04:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:24,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-29 08:04:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:24,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:24,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:24,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:04:24,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:24,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:04:24,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:24,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:24,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:24,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 08:04:24,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:24,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:24,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-29 08:04:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:24,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:24,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:24,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:04:24,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:24,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 08:04:24,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:24,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:24,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:24,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 08:04:24,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:24,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:24,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-29 08:04:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:24,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:24,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:24,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:04:24,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:04:24,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:24,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 08:04:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:24,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-29 08:04:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:24,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:24,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:24,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:24,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:24,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:04:24,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:24,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:24,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:24,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:04:24,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:24,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:24,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 969 [2020-10-29 08:04:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:24,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:24,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:04:24,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:04:24,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:24,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 08:04:24,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:24,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2448 backedges. 359 proven. 559 refuted. 0 times theorem prover too weak. 1530 trivial. 0 not checked. [2020-10-29 08:04:25,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847667425] [2020-10-29 08:04:25,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:25,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:04:25,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032234836] [2020-10-29 08:04:25,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:04:25,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:25,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:04:25,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:04:25,739 INFO L87 Difference]: Start difference. First operand 7907 states and 8571 transitions. Second operand 7 states. [2020-10-29 08:04:29,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:29,236 INFO L93 Difference]: Finished difference Result 15152 states and 16472 transitions. [2020-10-29 08:04:29,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:04:29,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1090 [2020-10-29 08:04:29,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:29,265 INFO L225 Difference]: With dead ends: 15152 [2020-10-29 08:04:29,265 INFO L226 Difference]: Without dead ends: 7927 [2020-10-29 08:04:29,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:04:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7927 states. [2020-10-29 08:04:29,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7927 to 7909. [2020-10-29 08:04:29,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7909 states. [2020-10-29 08:04:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 8571 transitions. [2020-10-29 08:04:29,459 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 8571 transitions. Word has length 1090 [2020-10-29 08:04:29,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:29,461 INFO L481 AbstractCegarLoop]: Abstraction has 7909 states and 8571 transitions. [2020-10-29 08:04:29,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:04:29,461 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 8571 transitions. [2020-10-29 08:04:29,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1125 [2020-10-29 08:04:29,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:29,485 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-29 08:04:29,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:04:29,485 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:29,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:29,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1967134536, now seen corresponding path program 1 times [2020-10-29 08:04:29,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:29,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925132017] [2020-10-29 08:04:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:30,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:34,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:34,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1150 [2020-10-29 08:04:34,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:04:34,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-29 08:04:34,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:34,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 615 [2020-10-29 08:04:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-29 08:04:34,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:35,234 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 08:04:35,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:35,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:35,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:35,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:35,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:35,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:04:35,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:35,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:35,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:35,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:35,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:35,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:35,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:04:35,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:35,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 08:04:35,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:35,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:35,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:35,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:35,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:04:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:35,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:35,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:35,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:04:35,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:04:35,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:35,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:04:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:35,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:35,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:35,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:04:35,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:35,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:04:35,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:35,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:35,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:35,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:04:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:35,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:35,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:35,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:04:35,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:35,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 08:04:35,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:35,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:35,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:35,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:35,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 08:04:35,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:35,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-29 08:04:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:35,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:35,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:35,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:04:35,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 08:04:35,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:35,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:35,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:35,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:35,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 08:04:35,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:35,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-10-29 08:04:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:35,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:35,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:35,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:04:35,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:35,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 08:04:35,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:35,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 08:04:35,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:35,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:36,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 893 [2020-10-29 08:04:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:36,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:36,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:36,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:36,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:36,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:04:36,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:36,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:04:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:36,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2020-10-29 08:04:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:36,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:36,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 08:04:36,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:36,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:04:36,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:36,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 08:04:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:36,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 649 proven. 352 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2020-10-29 08:04:36,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925132017] [2020-10-29 08:04:36,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:36,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:04:36,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491324924] [2020-10-29 08:04:36,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:04:36,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:36,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:04:36,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:04:36,775 INFO L87 Difference]: Start difference. First operand 7909 states and 8571 transitions. Second operand 7 states. [2020-10-29 08:04:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:41,403 INFO L93 Difference]: Finished difference Result 19558 states and 21573 transitions. [2020-10-29 08:04:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:04:41,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1124 [2020-10-29 08:04:41,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:41,441 INFO L225 Difference]: With dead ends: 19558 [2020-10-29 08:04:41,441 INFO L226 Difference]: Without dead ends: 12331 [2020-10-29 08:04:41,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:04:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2020-10-29 08:04:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 11986. [2020-10-29 08:04:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11986 states. [2020-10-29 08:04:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11986 states to 11986 states and 13003 transitions. [2020-10-29 08:04:41,697 INFO L78 Accepts]: Start accepts. Automaton has 11986 states and 13003 transitions. Word has length 1124 [2020-10-29 08:04:41,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:41,699 INFO L481 AbstractCegarLoop]: Abstraction has 11986 states and 13003 transitions. [2020-10-29 08:04:41,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:04:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 11986 states and 13003 transitions. [2020-10-29 08:04:41,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1194 [2020-10-29 08:04:41,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:41,736 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:04:41,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:04:41,736 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:41,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:41,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1599395994, now seen corresponding path program 1 times [2020-10-29 08:04:41,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:41,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059749938] [2020-10-29 08:04:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:42,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:42,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:42,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:47,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:47,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1219 [2020-10-29 08:04:47,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:04:47,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-29 08:04:47,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:47,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:47,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:47,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 616 [2020-10-29 08:04:47,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-29 08:04:47,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:47,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:47,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:47,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:47,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:47,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:47,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 08:04:47,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:47,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:47,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:47,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:47,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:47,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:47,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:04:47,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:47,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:04:47,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:47,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:47,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:47,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:04:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:47,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:47,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:47,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:04:47,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:47,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:04:47,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:47,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:47,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:47,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:47,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:04:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:47,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:47,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:47,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:04:47,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:47,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:04:47,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:47,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:47,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:47,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:04:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:47,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:47,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:04:47,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:47,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:04:47,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:47,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:04:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:47,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 08:04:47,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:47,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-29 08:04:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:47,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:47,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:47,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:04:47,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:47,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 08:04:47,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:47,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:04:47,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-29 08:04:47,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:47,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 752 [2020-10-29 08:04:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:47,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:48,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:48,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:04:48,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:48,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 08:04:48,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:48,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:48,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:48,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 08:04:48,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:48,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:48,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 894 [2020-10-29 08:04:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:48,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:48,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:48,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:04:48,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:48,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 08:04:48,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:48,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:04:48,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:48,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:48,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1004 [2020-10-29 08:04:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:48,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:48,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 08:04:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-29 08:04:48,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:48,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-29 08:04:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3406 backedges. 650 proven. 389 refuted. 0 times theorem prover too weak. 2367 trivial. 0 not checked. [2020-10-29 08:04:49,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059749938] [2020-10-29 08:04:49,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:04:49,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:04:49,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676575455] [2020-10-29 08:04:49,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:04:49,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:04:49,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:04:49,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:04:49,365 INFO L87 Difference]: Start difference. First operand 11986 states and 13003 transitions. Second operand 7 states. [2020-10-29 08:04:53,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:04:53,792 INFO L93 Difference]: Finished difference Result 25673 states and 28101 transitions. [2020-10-29 08:04:53,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:04:53,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1193 [2020-10-29 08:04:53,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:04:53,851 INFO L225 Difference]: With dead ends: 25673 [2020-10-29 08:04:53,852 INFO L226 Difference]: Without dead ends: 14369 [2020-10-29 08:04:53,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:04:53,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14369 states. [2020-10-29 08:04:54,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14369 to 14024. [2020-10-29 08:04:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14024 states. [2020-10-29 08:04:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14024 states to 14024 states and 15110 transitions. [2020-10-29 08:04:54,160 INFO L78 Accepts]: Start accepts. Automaton has 14024 states and 15110 transitions. Word has length 1193 [2020-10-29 08:04:54,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:04:54,162 INFO L481 AbstractCegarLoop]: Abstraction has 14024 states and 15110 transitions. [2020-10-29 08:04:54,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:04:54,162 INFO L276 IsEmpty]: Start isEmpty. Operand 14024 states and 15110 transitions. [2020-10-29 08:04:54,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1239 [2020-10-29 08:04:54,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:04:54,207 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:04:54,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:04:54,208 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:04:54,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:04:54,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1004923836, now seen corresponding path program 1 times [2020-10-29 08:04:54,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:04:54,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750590966] [2020-10-29 08:04:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:04:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:54,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:54,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:58,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:59,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:59,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1260 [2020-10-29 08:04:59,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:04:59,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 08:04:59,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:59,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:04:59,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 741 [2020-10-29 08:04:59,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:04:59,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:59,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:04:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:59,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:59,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:04:59,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:59,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:04:59,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:59,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:59,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:59,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:59,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:59,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:04:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:59,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:59,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:04:59,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:59,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 08:04:59,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:59,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:59,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:59,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:59,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:04:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:04:59,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:04:59,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:04:59,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:04:59,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:04:59,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:04:59,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:04:59,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:04:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:04:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:04:59,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:04:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:04:59,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:05:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:00,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:00,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:05:00,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:00,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:05:00,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:00,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:00,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:00,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:05:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:00,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:00,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:00,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 08:05:00,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:00,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 08:05:00,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:00,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:00,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 08:05:00,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:00,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 733 [2020-10-29 08:05:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:00,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:00,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:00,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:05:00,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:00,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-29 08:05:00,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:00,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:00,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:00,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:00,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:05:00,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:01,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1006 [2020-10-29 08:05:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:01,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:01,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:01,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:05:01,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 08:05:01,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:01,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-29 08:05:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2637 backedges. 828 proven. 217 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2020-10-29 08:05:02,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750590966] [2020-10-29 08:05:02,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:05:02,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:05:02,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141246137] [2020-10-29 08:05:02,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:05:02,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:05:02,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:05:02,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:05:02,461 INFO L87 Difference]: Start difference. First operand 14024 states and 15110 transitions. Second operand 7 states. [2020-10-29 08:05:06,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:05:06,578 INFO L93 Difference]: Finished difference Result 27372 states and 29531 transitions. [2020-10-29 08:05:06,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:05:06,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1238 [2020-10-29 08:05:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:05:06,620 INFO L225 Difference]: With dead ends: 27372 [2020-10-29 08:05:06,620 INFO L226 Difference]: Without dead ends: 14030 [2020-10-29 08:05:06,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:05:06,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14030 states. [2020-10-29 08:05:06,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14030 to 14026. [2020-10-29 08:05:06,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14026 states. [2020-10-29 08:05:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14026 states to 14026 states and 15105 transitions. [2020-10-29 08:05:06,900 INFO L78 Accepts]: Start accepts. Automaton has 14026 states and 15105 transitions. Word has length 1238 [2020-10-29 08:05:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:05:06,902 INFO L481 AbstractCegarLoop]: Abstraction has 14026 states and 15105 transitions. [2020-10-29 08:05:06,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:05:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 14026 states and 15105 transitions. [2020-10-29 08:05:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1262 [2020-10-29 08:05:06,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:05:06,940 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:05:06,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 08:05:06,940 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:05:06,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:05:06,941 INFO L82 PathProgramCache]: Analyzing trace with hash -144487082, now seen corresponding path program 1 times [2020-10-29 08:05:06,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:05:06,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736427553] [2020-10-29 08:05:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:05:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:07,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:07,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:12,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:12,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1287 [2020-10-29 08:05:12,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:05:12,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 08:05:12,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:12,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-29 08:05:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-29 08:05:12,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:12,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:05:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:12,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:12,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:05:12,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:12,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:05:12,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:12,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:12,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:05:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:12,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:12,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:05:12,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:12,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 08:05:12,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:12,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:12,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-29 08:05:12,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:12,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:05:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:12,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:12,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 08:05:12,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-29 08:05:12,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:12,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:12,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 08:05:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:12,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-29 08:05:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:12,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:13,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:13,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:05:13,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:13,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 08:05:13,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:13,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-29 08:05:13,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-29 08:05:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:13,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:13,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:13,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 08:05:13,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:13,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:05:13,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:13,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-29 08:05:13,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:13,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:13,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-29 08:05:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:13,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:13,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:05:13,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:13,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 08:05:13,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:13,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:13,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:13,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-29 08:05:13,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:13,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:13,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 777 [2020-10-29 08:05:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:13,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:13,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:13,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:05:13,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:13,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:05:13,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:13,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 08:05:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:13,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:13,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 919 [2020-10-29 08:05:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:13,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:13,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:13,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:05:13,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:13,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:05:13,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:13,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-29 08:05:13,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:13,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:13,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1029 [2020-10-29 08:05:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:13,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:13,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:13,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:05:13,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 08:05:13,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:13,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-29 08:05:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3624 backedges. 295 proven. 766 refuted. 0 times theorem prover too weak. 2563 trivial. 0 not checked. [2020-10-29 08:05:15,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736427553] [2020-10-29 08:05:15,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:05:15,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:05:15,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512855273] [2020-10-29 08:05:15,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:05:15,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:05:15,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:05:15,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:05:15,088 INFO L87 Difference]: Start difference. First operand 14026 states and 15105 transitions. Second operand 7 states. [2020-10-29 08:05:18,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:05:18,981 INFO L93 Difference]: Finished difference Result 29069 states and 31482 transitions. [2020-10-29 08:05:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:05:18,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1261 [2020-10-29 08:05:18,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:05:19,030 INFO L225 Difference]: With dead ends: 29069 [2020-10-29 08:05:19,030 INFO L226 Difference]: Without dead ends: 15725 [2020-10-29 08:05:19,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:05:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15725 states. [2020-10-29 08:05:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15725 to 15725. [2020-10-29 08:05:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15725 states. [2020-10-29 08:05:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15725 states to 15725 states and 16978 transitions. [2020-10-29 08:05:19,328 INFO L78 Accepts]: Start accepts. Automaton has 15725 states and 16978 transitions. Word has length 1261 [2020-10-29 08:05:19,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:05:19,328 INFO L481 AbstractCegarLoop]: Abstraction has 15725 states and 16978 transitions. [2020-10-29 08:05:19,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:05:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 15725 states and 16978 transitions. [2020-10-29 08:05:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1323 [2020-10-29 08:05:19,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:05:19,365 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:05:19,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 08:05:19,366 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:05:19,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:05:19,367 INFO L82 PathProgramCache]: Analyzing trace with hash -697624732, now seen corresponding path program 1 times [2020-10-29 08:05:19,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:05:19,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630605797] [2020-10-29 08:05:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:05:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:19,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:20,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:24,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:24,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1348 [2020-10-29 08:05:24,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:05:24,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-29 08:05:24,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:24,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1104 [2020-10-29 08:05:24,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-29 08:05:24,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:24,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:05:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:24,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:24,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:24,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:05:24,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:24,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:05:24,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:24,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:24,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:24,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:24,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:24,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:24,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:05:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:05:25,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 08:05:25,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:25,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:25,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:05:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:05:25,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:05:25,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:05:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:05:25,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:05:25,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:05:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 08:05:25,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:05:25,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2020-10-29 08:05:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:05:25,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 08:05:25,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-29 08:05:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:05:25,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:05:25,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:25,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:25,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 980 [2020-10-29 08:05:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 08:05:25,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 08:05:25,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:25,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 08:05:25,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:25,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1090 [2020-10-29 08:05:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:25,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:25,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:05:25,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:25,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 08:05:25,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:25,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:25,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-29 08:05:25,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 1177 proven. 2 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2020-10-29 08:05:27,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630605797] [2020-10-29 08:05:27,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:05:27,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:05:27,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387123794] [2020-10-29 08:05:27,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:05:27,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:05:27,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:05:27,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:05:27,063 INFO L87 Difference]: Start difference. First operand 15725 states and 16978 transitions. Second operand 7 states. [2020-10-29 08:05:31,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:05:31,563 INFO L93 Difference]: Finished difference Result 34150 states and 37085 transitions. [2020-10-29 08:05:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:05:31,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1322 [2020-10-29 08:05:31,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:05:31,617 INFO L225 Difference]: With dead ends: 34150 [2020-10-29 08:05:31,618 INFO L226 Difference]: Without dead ends: 19107 [2020-10-29 08:05:31,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:05:31,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19107 states. [2020-10-29 08:05:31,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19107 to 18770. [2020-10-29 08:05:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18770 states. [2020-10-29 08:05:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18770 states to 18770 states and 20202 transitions. [2020-10-29 08:05:31,979 INFO L78 Accepts]: Start accepts. Automaton has 18770 states and 20202 transitions. Word has length 1322 [2020-10-29 08:05:31,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:05:31,981 INFO L481 AbstractCegarLoop]: Abstraction has 18770 states and 20202 transitions. [2020-10-29 08:05:31,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:05:31,981 INFO L276 IsEmpty]: Start isEmpty. Operand 18770 states and 20202 transitions. [2020-10-29 08:05:32,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1546 [2020-10-29 08:05:32,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:05:32,028 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:05:32,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 08:05:32,028 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:05:32,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:05:32,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1429889710, now seen corresponding path program 1 times [2020-10-29 08:05:32,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:05:32,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906732195] [2020-10-29 08:05:32,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:05:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:34,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:35,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:37,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:37,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1571 [2020-10-29 08:05:37,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:05:37,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 08:05:37,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:37,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 938 [2020-10-29 08:05:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-29 08:05:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:37,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:05:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:37,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:37,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:37,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:05:37,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:05:37,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:37,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:37,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:37,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:37,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:05:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:37,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:37,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 08:05:37,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 08:05:37,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:37,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:38,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 08:05:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:38,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:38,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:38,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 08:05:38,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 08:05:38,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:38,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:38,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-29 08:05:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:38,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:38,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:38,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-29 08:05:38,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:38,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:05:38,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:38,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:38,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:38,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-29 08:05:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:38,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:38,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 08:05:38,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 08:05:38,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:38,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:38,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:38,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-29 08:05:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:38,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:38,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:05:38,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:38,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 08:05:38,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:38,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:38,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:38,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:38,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 08:05:38,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:38,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 928 [2020-10-29 08:05:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:38,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:38,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:38,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:05:38,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:38,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-29 08:05:38,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:38,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-29 08:05:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:39,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1201 [2020-10-29 08:05:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:39,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:39,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:39,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 08:05:39,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:39,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 08:05:39,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:39,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 08:05:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:39,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:39,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1313 [2020-10-29 08:05:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:39,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:39,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:05:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:05:39,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:39,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-29 08:05:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:39,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4492 backedges. 1077 proven. 326 refuted. 0 times theorem prover too weak. 3089 trivial. 0 not checked. [2020-10-29 08:05:42,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906732195] [2020-10-29 08:05:42,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:05:42,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:05:42,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841371727] [2020-10-29 08:05:42,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:05:42,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:05:42,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:05:42,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:05:42,455 INFO L87 Difference]: Start difference. First operand 18770 states and 20202 transitions. Second operand 8 states. [2020-10-29 08:05:49,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:05:49,080 INFO L93 Difference]: Finished difference Result 36882 states and 39775 transitions. [2020-10-29 08:05:49,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:05:49,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1545 [2020-10-29 08:05:49,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:05:49,138 INFO L225 Difference]: With dead ends: 36882 [2020-10-29 08:05:49,138 INFO L226 Difference]: Without dead ends: 18794 [2020-10-29 08:05:49,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 08:05:49,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18794 states. [2020-10-29 08:05:49,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18794 to 18770. [2020-10-29 08:05:49,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18770 states. [2020-10-29 08:05:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18770 states to 18770 states and 20183 transitions. [2020-10-29 08:05:49,503 INFO L78 Accepts]: Start accepts. Automaton has 18770 states and 20183 transitions. Word has length 1545 [2020-10-29 08:05:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:05:49,505 INFO L481 AbstractCegarLoop]: Abstraction has 18770 states and 20183 transitions. [2020-10-29 08:05:49,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:05:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 18770 states and 20183 transitions. [2020-10-29 08:05:49,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1568 [2020-10-29 08:05:49,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:05:49,550 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:05:49,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 08:05:49,551 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:05:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:05:49,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1007674614, now seen corresponding path program 1 times [2020-10-29 08:05:49,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:05:49,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742631282] [2020-10-29 08:05:49,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:05:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:50,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:50,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:50,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:54,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:54,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1595 [2020-10-29 08:05:54,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:05:54,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 08:05:54,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:54,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1348 [2020-10-29 08:05:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 08:05:54,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:55,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:05:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:55,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:55,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:55,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:05:55,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:55,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:05:55,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:55,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:55,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:55,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:05:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:55,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:55,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:55,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:05:55,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:55,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 08:05:55,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:55,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:55,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:55,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:55,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:55,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:55,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:05:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:55,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:55,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:55,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:05:55,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:55,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 08:05:55,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:55,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:55,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:55,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:55,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:05:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:55,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:55,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:05:55,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:55,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 08:05:55,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:55,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:55,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:55,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:55,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:55,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:55,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:05:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:55,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:55,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:55,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:05:55,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:55,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:05:55,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:55,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:55,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:55,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:55,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:55,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-29 08:05:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:55,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:55,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:55,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:05:55,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:05:55,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:55,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:55,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-29 08:05:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:55,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:55,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 08:05:55,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:55,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 08:05:55,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:55,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:05:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:05:55,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:55,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1034 [2020-10-29 08:05:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:55,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:55,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-29 08:05:55,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:55,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 08:05:55,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:55,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:55,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:55,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:55,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 295 [2020-10-29 08:05:55,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:55,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:05:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:55,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:55,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:55,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 08:05:55,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 08:05:55,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:55,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:05:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:05:55,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 08:05:55,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:55,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1335 [2020-10-29 08:05:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:05:56,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:05:56,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:05:56,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:05:56,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:05:56,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 08:05:56,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:05:56,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:05:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:05:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:05:56,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-29 08:05:56,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:05:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4206 backedges. 1307 proven. 2 refuted. 0 times theorem prover too weak. 2897 trivial. 0 not checked. [2020-10-29 08:05:57,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742631282] [2020-10-29 08:05:57,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:05:57,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:05:57,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128280699] [2020-10-29 08:05:57,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:05:57,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:05:57,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:05:57,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:05:57,751 INFO L87 Difference]: Start difference. First operand 18770 states and 20183 transitions. Second operand 7 states. [2020-10-29 08:06:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:06:03,811 INFO L93 Difference]: Finished difference Result 37869 states and 40858 transitions. [2020-10-29 08:06:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:06:03,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1567 [2020-10-29 08:06:03,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:06:03,867 INFO L225 Difference]: With dead ends: 37869 [2020-10-29 08:06:03,867 INFO L226 Difference]: Without dead ends: 19781 [2020-10-29 08:06:03,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:06:03,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19781 states. [2020-10-29 08:06:04,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19781 to 19444. [2020-10-29 08:06:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19444 states. [2020-10-29 08:06:04,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19444 states to 19444 states and 20827 transitions. [2020-10-29 08:06:04,477 INFO L78 Accepts]: Start accepts. Automaton has 19444 states and 20827 transitions. Word has length 1567 [2020-10-29 08:06:04,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:06:04,479 INFO L481 AbstractCegarLoop]: Abstraction has 19444 states and 20827 transitions. [2020-10-29 08:06:04,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:06:04,480 INFO L276 IsEmpty]: Start isEmpty. Operand 19444 states and 20827 transitions. [2020-10-29 08:06:04,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1805 [2020-10-29 08:06:04,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:06:04,531 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 08:06:04,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 08:06:04,532 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:06:04,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:06:04,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1677070228, now seen corresponding path program 1 times [2020-10-29 08:06:04,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:06:04,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612949791] [2020-10-29 08:06:04,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:06:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:05,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:05,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:06,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:06,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:09,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:09,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1832 [2020-10-29 08:06:09,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:06:09,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-10-29 08:06:09,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:09,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:06:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1588 [2020-10-29 08:06:09,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 221 [2020-10-29 08:06:09,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:06:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:10,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:10,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:06:10,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:06:10,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:10,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:10,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:10,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:10,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:06:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:10,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:10,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 08:06:10,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:06:10,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:10,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:10,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:10,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-29 08:06:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:10,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:10,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:10,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 08:06:10,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 08:06:10,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:10,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:10,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-29 08:06:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:10,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:10,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:10,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 08:06:10,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:10,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:06:10,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:10,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:10,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:10,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-29 08:06:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:10,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:10,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:10,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:06:10,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:10,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:06:10,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:10,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:10,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:10,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:10,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-29 08:06:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:10,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:10,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:10,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:06:10,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:06:10,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:10,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:10,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:10,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:10,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-29 08:06:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:10,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:10,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:10,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 08:06:10,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 08:06:10,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:10,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:10,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:10,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:10,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1034 [2020-10-29 08:06:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:10,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:10,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:10,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 08:06:10,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:10,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 08:06:10,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:10,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:10,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:06:10,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:10,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:06:10,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:10,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1307 [2020-10-29 08:06:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:10,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:11,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:11,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-29 08:06:11,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 08:06:11,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:11,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:06:11,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:06:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 260 [2020-10-29 08:06:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:11,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1572 [2020-10-29 08:06:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:06:11,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:06:11,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:06:11,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-29 08:06:11,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:06:11,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-29 08:06:11,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:06:11,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:06:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:06:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:06:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-29 08:06:11,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:06:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5729 backedges. 1541 proven. 2 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2020-10-29 08:06:13,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612949791] [2020-10-29 08:06:13,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:06:13,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:06:13,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727170522] [2020-10-29 08:06:13,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:06:13,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:06:13,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:06:13,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:06:13,665 INFO L87 Difference]: Start difference. First operand 19444 states and 20827 transitions. Second operand 7 states.