/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:02:52,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:02:52,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:02:52,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:02:52,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:02:52,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:02:52,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:02:52,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:02:52,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:02:52,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:02:52,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:02:52,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:02:52,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:02:52,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:02:52,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:02:52,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:02:52,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:02:52,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:02:52,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:02:52,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:02:52,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:02:52,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:02:52,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:02:52,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:02:52,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:02:52,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:02:52,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:02:52,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:02:52,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:02:52,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:02:52,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:02:52,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:02:52,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:02:52,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:02:52,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:02:52,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:02:52,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:02:52,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:02:52,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:02:52,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:02:52,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:02:52,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:02:52,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:02:52,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:02:52,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:02:52,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:02:52,649 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:02:52,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:02:52,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:02:52,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:02:52,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:02:52,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:02:52,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:02:52,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:02:52,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:02:52,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:02:52,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:02:52,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:02:52,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:02:52,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:02:52,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:02:52,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:02:52,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:02:52,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:02:52,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:02:52,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:02:52,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:02:52,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:02:52,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:02:52,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:02:52,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:02:52,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:02:53,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:02:53,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:02:53,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:02:53,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:02:53,140 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:02:53,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label15.c [2020-10-28 13:02:53,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd5c0362f/234dd77217334a17b54b10b67eb40121/FLAG7148552e5 [2020-10-28 13:02:54,214 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:02:54,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label15.c [2020-10-28 13:02:54,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd5c0362f/234dd77217334a17b54b10b67eb40121/FLAG7148552e5 [2020-10-28 13:02:54,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd5c0362f/234dd77217334a17b54b10b67eb40121 [2020-10-28 13:02:54,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:02:54,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:02:54,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:02:54,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:02:54,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:02:54,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:02:54" (1/1) ... [2020-10-28 13:02:54,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2a1c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:54, skipping insertion in model container [2020-10-28 13:02:54,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:02:54" (1/1) ... [2020-10-28 13:02:54,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:02:54,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:02:55,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:02:55,748 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:02:56,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:02:56,107 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:02:56,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:56 WrapperNode [2020-10-28 13:02:56,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:02:56,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:02:56,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:02:56,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:02:56,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:56" (1/1) ... [2020-10-28 13:02:56,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:56" (1/1) ... [2020-10-28 13:02:56,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:56" (1/1) ... [2020-10-28 13:02:56,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:56" (1/1) ... [2020-10-28 13:02:56,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:56" (1/1) ... [2020-10-28 13:02:56,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:56" (1/1) ... [2020-10-28 13:02:56,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:56" (1/1) ... [2020-10-28 13:02:56,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:02:56,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:02:56,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:02:56,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:02:56,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:02:56,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:02:56,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:02:56,444 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:02:56,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:02:56,445 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:02:56,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:02:56,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:02:56,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:02:56,445 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:02:56,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:02:56,446 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:02:56,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:02:56,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:02:56,446 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:02:56,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:02:56,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:02:56,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:02:56,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:02:56,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:02:56,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:02:56,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:02:59,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:02:59,877 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:02:59,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:02:59 BoogieIcfgContainer [2020-10-28 13:02:59,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:02:59,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:02:59,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:02:59,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:02:59,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:02:54" (1/3) ... [2020-10-28 13:02:59,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edc4157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:02:59, skipping insertion in model container [2020-10-28 13:02:59,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:02:56" (2/3) ... [2020-10-28 13:02:59,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edc4157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:02:59, skipping insertion in model container [2020-10-28 13:02:59,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:02:59" (3/3) ... [2020-10-28 13:02:59,896 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label15.c [2020-10-28 13:02:59,910 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:02:59,917 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:02:59,932 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:02:59,982 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:02:59,982 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:02:59,983 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:02:59,983 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:02:59,983 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:02:59,983 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:02:59,983 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:02:59,984 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:03:00,054 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:03:00,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 13:03:00,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:00,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:00,064 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:00,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:00,076 INFO L82 PathProgramCache]: Analyzing trace with hash 270678297, now seen corresponding path program 1 times [2020-10-28 13:03:00,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:00,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828745355] [2020-10-28 13:03:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:00,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:00,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:00,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 13:03:00,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:00,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-28 13:03:00,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:00,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:00,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:03:00,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 13:03:00,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:03:00,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:00,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:00,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:00,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:00,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:00,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:03:00,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:00,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:00,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:03:00,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:03:00,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828745355] [2020-10-28 13:03:00,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:03:00,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:03:00,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219853531] [2020-10-28 13:03:00,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:03:00,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:00,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:03:00,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:03:00,931 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:03:06,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:06,819 INFO L93 Difference]: Finished difference Result 1250 states and 2231 transitions. [2020-10-28 13:03:06,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:03:06,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 13:03:06,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:06,843 INFO L225 Difference]: With dead ends: 1250 [2020-10-28 13:03:06,844 INFO L226 Difference]: Without dead ends: 730 [2020-10-28 13:03:06,857 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 [2020-10-28 13:03:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-28 13:03:06,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 713. [2020-10-28 13:03:06,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-28 13:03:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1207 transitions. [2020-10-28 13:03:06,990 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1207 transitions. Word has length 26 [2020-10-28 13:03:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:06,991 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1207 transitions. [2020-10-28 13:03:06,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:03:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1207 transitions. [2020-10-28 13:03:06,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 13:03:06,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:06,999 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:03:07,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:03:07,000 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:07,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:07,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1013953042, now seen corresponding path program 1 times [2020-10-28 13:03:07,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:07,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938183291] [2020-10-28 13:03:07,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:07,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:07,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:08,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:08,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 13:03:08,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:08,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1628 [2020-10-28 13:03:08,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:08,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:03:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:03:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:08,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:08,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:08,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:08,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:08,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:08,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:03:08,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:08,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:03:08,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:03:08,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:09,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:09,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:03:09,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:09,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 13:03:09,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:09,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:03:09,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:03:09,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938183291] [2020-10-28 13:03:09,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:03:09,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:03:09,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505619958] [2020-10-28 13:03:09,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:09,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:09,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:09,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:09,239 INFO L87 Difference]: Start difference. First operand 713 states and 1207 transitions. Second operand 7 states. [2020-10-28 13:03:16,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:16,335 INFO L93 Difference]: Finished difference Result 1776 states and 3021 transitions. [2020-10-28 13:03:16,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:03:16,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-28 13:03:16,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:16,348 INFO L225 Difference]: With dead ends: 1776 [2020-10-28 13:03:16,348 INFO L226 Difference]: Without dead ends: 1069 [2020-10-28 13:03:16,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:03:16,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-10-28 13:03:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1042. [2020-10-28 13:03:16,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-28 13:03:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1663 transitions. [2020-10-28 13:03:16,408 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1663 transitions. Word has length 95 [2020-10-28 13:03:16,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:16,408 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1663 transitions. [2020-10-28 13:03:16,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:16,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1663 transitions. [2020-10-28 13:03:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 13:03:16,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:16,412 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:03:16,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:03:16,413 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:16,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:16,413 INFO L82 PathProgramCache]: Analyzing trace with hash 356974578, now seen corresponding path program 1 times [2020-10-28 13:03:16,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:16,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670713195] [2020-10-28 13:03:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:16,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:16,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:17,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:17,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:17,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:03:17,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:03:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-28 13:03:17,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:17,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:17,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:17,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:03:17,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:03:17,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:17,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:17,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:17,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:17,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:17,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:03:17,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:17,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:03:17,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:17,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:17,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:17,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:17,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:03:17,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:17,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 13:03:17,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:17,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:03:17,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:03:17,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670713195] [2020-10-28 13:03:17,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:03:17,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:03:17,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719360190] [2020-10-28 13:03:17,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:17,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:17,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:17,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:17,726 INFO L87 Difference]: Start difference. First operand 1042 states and 1663 transitions. Second operand 7 states. [2020-10-28 13:03:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:24,403 INFO L93 Difference]: Finished difference Result 2759 states and 4517 transitions. [2020-10-28 13:03:24,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:03:24,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-28 13:03:24,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:24,417 INFO L225 Difference]: With dead ends: 2759 [2020-10-28 13:03:24,417 INFO L226 Difference]: Without dead ends: 1723 [2020-10-28 13:03:24,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:03:24,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-10-28 13:03:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1658. [2020-10-28 13:03:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-10-28 13:03:24,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2310 transitions. [2020-10-28 13:03:24,488 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2310 transitions. Word has length 96 [2020-10-28 13:03:24,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:24,488 INFO L481 AbstractCegarLoop]: Abstraction has 1658 states and 2310 transitions. [2020-10-28 13:03:24,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2310 transitions. [2020-10-28 13:03:24,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-28 13:03:24,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:24,491 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:03:24,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:03:24,491 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:24,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:24,492 INFO L82 PathProgramCache]: Analyzing trace with hash 770040618, now seen corresponding path program 1 times [2020-10-28 13:03:24,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:24,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297313136] [2020-10-28 13:03:24,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:24,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:24,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:25,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:25,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:03:25,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:25,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-28 13:03:25,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:25,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:03:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:03:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:25,369 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:03:25,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:25,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:25,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:25,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:25,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:25,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:03:25,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:25,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:25,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:03:25,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:25,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:25,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:25,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:03:25,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:25,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:03:25,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:25,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:03:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:03:25,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297313136] [2020-10-28 13:03:25,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:03:25,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:03:25,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396645049] [2020-10-28 13:03:25,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:25,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:25,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:25,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:25,589 INFO L87 Difference]: Start difference. First operand 1658 states and 2310 transitions. Second operand 7 states. [2020-10-28 13:03:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:33,506 INFO L93 Difference]: Finished difference Result 4308 states and 6253 transitions. [2020-10-28 13:03:33,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:03:33,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-28 13:03:33,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:33,545 INFO L225 Difference]: With dead ends: 4308 [2020-10-28 13:03:33,545 INFO L226 Difference]: Without dead ends: 2963 [2020-10-28 13:03:33,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:03:33,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-10-28 13:03:33,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2304. [2020-10-28 13:03:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2304 states. [2020-10-28 13:03:33,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3063 transitions. [2020-10-28 13:03:33,643 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3063 transitions. Word has length 100 [2020-10-28 13:03:33,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:33,644 INFO L481 AbstractCegarLoop]: Abstraction has 2304 states and 3063 transitions. [2020-10-28 13:03:33,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:33,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3063 transitions. [2020-10-28 13:03:33,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-28 13:03:33,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:33,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:33,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:03:33,663 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:33,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:33,664 INFO L82 PathProgramCache]: Analyzing trace with hash 803629766, now seen corresponding path program 1 times [2020-10-28 13:03:33,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:33,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527534777] [2020-10-28 13:03:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:33,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:34,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:35,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:35,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-28 13:03:35,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1590 [2020-10-28 13:03:35,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:35,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:03:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 13:03:35,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:35,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:35,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:35,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:35,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:35,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:35,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:03:35,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:35,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:35,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:35,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:35,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:03:35,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:35,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-28 13:03:35,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:35,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:35,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:35,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:03:35,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:03:36,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527534777] [2020-10-28 13:03:36,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:36,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:03:36,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232348310] [2020-10-28 13:03:36,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:03:36,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:36,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:03:36,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:03:36,153 INFO L87 Difference]: Start difference. First operand 2304 states and 3063 transitions. Second operand 5 states. [2020-10-28 13:03:42,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:42,708 INFO L93 Difference]: Finished difference Result 5215 states and 7259 transitions. [2020-10-28 13:03:42,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:03:42,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 300 [2020-10-28 13:03:42,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:42,731 INFO L225 Difference]: With dead ends: 5215 [2020-10-28 13:03:42,731 INFO L226 Difference]: Without dead ends: 3855 [2020-10-28 13:03:42,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:03:42,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2020-10-28 13:03:42,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3235. [2020-10-28 13:03:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3235 states. [2020-10-28 13:03:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4148 transitions. [2020-10-28 13:03:42,847 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4148 transitions. Word has length 300 [2020-10-28 13:03:42,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:42,850 INFO L481 AbstractCegarLoop]: Abstraction has 3235 states and 4148 transitions. [2020-10-28 13:03:42,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:03:42,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4148 transitions. [2020-10-28 13:03:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-28 13:03:42,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:42,859 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:42,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:03:42,860 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:42,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:42,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1054634426, now seen corresponding path program 1 times [2020-10-28 13:03:42,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:42,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610076196] [2020-10-28 13:03:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:43,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:43,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:48,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:48,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-28 13:03:48,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:03:48,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 13:03:48,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:48,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:48,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:03:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:03:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:03:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:48,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:48,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:48,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:48,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:48,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:48,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:03:48,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:48,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:48,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:03:48,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:48,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:48,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:48,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:03:48,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:48,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-28 13:03:48,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:48,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:48,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:03:48,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:48,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:03:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:49,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:49,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:49,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:03:49,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:49,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:03:49,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:49,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:49,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:49,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 13:03:49,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:49,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:49,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-28 13:03:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:49,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:49,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:49,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:03:49,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:03:49,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:49,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:03:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:49,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:03:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 54 proven. 156 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-28 13:03:49,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610076196] [2020-10-28 13:03:49,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:49,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:03:49,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327732884] [2020-10-28 13:03:49,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:03:49,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:49,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:03:49,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:03:49,588 INFO L87 Difference]: Start difference. First operand 3235 states and 4148 transitions. Second operand 7 states. [2020-10-28 13:03:56,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:03:56,476 INFO L93 Difference]: Finished difference Result 6811 states and 8691 transitions. [2020-10-28 13:03:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:03:56,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-28 13:03:56,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:03:56,500 INFO L225 Difference]: With dead ends: 6811 [2020-10-28 13:03:56,500 INFO L226 Difference]: Without dead ends: 3582 [2020-10-28 13:03:56,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:03:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2020-10-28 13:03:56,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3554. [2020-10-28 13:03:56,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3554 states. [2020-10-28 13:03:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 4490 transitions. [2020-10-28 13:03:56,604 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 4490 transitions. Word has length 392 [2020-10-28 13:03:56,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:03:56,605 INFO L481 AbstractCegarLoop]: Abstraction has 3554 states and 4490 transitions. [2020-10-28 13:03:56,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:03:56,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 4490 transitions. [2020-10-28 13:03:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-28 13:03:56,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:03:56,614 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:03:56,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:03:56,614 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:03:56,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:03:56,615 INFO L82 PathProgramCache]: Analyzing trace with hash 26475440, now seen corresponding path program 1 times [2020-10-28 13:03:56,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:03:56,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921428903] [2020-10-28 13:03:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:03:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:56,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:58,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:58,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-28 13:03:58,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:03:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1812 [2020-10-28 13:03:58,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:58,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:03:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 13:03:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:03:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:58,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:58,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:58,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:03:58,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:58,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:03:58,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:58,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:58,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:03:58,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:58,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:03:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:58,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:03:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:58,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:59,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:59,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:03:59,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-28 13:03:59,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:59,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:03:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:03:59,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:03:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:03:59,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:03:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:03:59,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:03:59,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:03:59,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 13:03:59,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:03:59,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-28 13:03:59,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:03:59,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:03:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:03:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:03:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:03:59,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:03:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:03:59,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921428903] [2020-10-28 13:03:59,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:03:59,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:03:59,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881626853] [2020-10-28 13:03:59,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:03:59,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:03:59,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:03:59,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:03:59,855 INFO L87 Difference]: Start difference. First operand 3554 states and 4490 transitions. Second operand 8 states. [2020-10-28 13:04:12,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:12,079 INFO L93 Difference]: Finished difference Result 9673 states and 13139 transitions. [2020-10-28 13:04:12,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:04:12,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 399 [2020-10-28 13:04:12,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:12,113 INFO L225 Difference]: With dead ends: 9673 [2020-10-28 13:04:12,113 INFO L226 Difference]: Without dead ends: 6432 [2020-10-28 13:04:12,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:04:12,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2020-10-28 13:04:12,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 6414. [2020-10-28 13:04:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6414 states. [2020-10-28 13:04:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6414 states to 6414 states and 8328 transitions. [2020-10-28 13:04:12,290 INFO L78 Accepts]: Start accepts. Automaton has 6414 states and 8328 transitions. Word has length 399 [2020-10-28 13:04:12,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:12,291 INFO L481 AbstractCegarLoop]: Abstraction has 6414 states and 8328 transitions. [2020-10-28 13:04:12,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:04:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 6414 states and 8328 transitions. [2020-10-28 13:04:12,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-28 13:04:12,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:12,301 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:04:12,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:04:12,301 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:12,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:12,302 INFO L82 PathProgramCache]: Analyzing trace with hash -2037804648, now seen corresponding path program 1 times [2020-10-28 13:04:12,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:12,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710739003] [2020-10-28 13:04:12,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:12,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:12,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:14,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:14,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-28 13:04:14,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:04:14,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2376 [2020-10-28 13:04:14,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:14,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:04:14,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:04:14,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:14,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:15,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:15,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:15,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:15,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:15,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:04:15,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:15,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:15,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:15,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:15,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:15,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:15,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:15,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:04:15,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:15,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-28 13:04:15,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:15,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:04:15,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:15,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:04:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:15,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:15,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:04:15,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:15,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 13:04:15,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:15,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:04:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:04:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:04:16,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710739003] [2020-10-28 13:04:16,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:16,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:04:16,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871232393] [2020-10-28 13:04:16,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:04:16,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:16,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:04:16,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:04:16,265 INFO L87 Difference]: Start difference. First operand 6414 states and 8328 transitions. Second operand 7 states. [2020-10-28 13:04:27,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:27,573 INFO L93 Difference]: Finished difference Result 13540 states and 17728 transitions. [2020-10-28 13:04:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:04:27,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2020-10-28 13:04:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:27,621 INFO L225 Difference]: With dead ends: 13540 [2020-10-28 13:04:27,622 INFO L226 Difference]: Without dead ends: 7439 [2020-10-28 13:04:27,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:04:27,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7439 states. [2020-10-28 13:04:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7439 to 7385. [2020-10-28 13:04:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7385 states. [2020-10-28 13:04:27,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7385 states to 7385 states and 9418 transitions. [2020-10-28 13:04:27,860 INFO L78 Accepts]: Start accepts. Automaton has 7385 states and 9418 transitions. Word has length 411 [2020-10-28 13:04:27,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:27,861 INFO L481 AbstractCegarLoop]: Abstraction has 7385 states and 9418 transitions. [2020-10-28 13:04:27,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:04:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 7385 states and 9418 transitions. [2020-10-28 13:04:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-28 13:04:27,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:27,870 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-28 13:04:27,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:04:27,871 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:27,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:27,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1412126137, now seen corresponding path program 1 times [2020-10-28 13:04:27,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:27,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54352650] [2020-10-28 13:04:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:28,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:28,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:28,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:29,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:29,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:33,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:33,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-28 13:04:33,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:04:33,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 13:04:33,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:33,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:04:33,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:04:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-28 13:04:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:33,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:33,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:33,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:33,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:33,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:04:33,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:33,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:33,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:33,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:04:33,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:33,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:33,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:33,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:04:33,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:33,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 13:04:33,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:33,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:33,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:33,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:33,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:04:33,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:33,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:04:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:33,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:33,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:34,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:34,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:04:34,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:04:34,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-28 13:04:34,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:34,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:04:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:34,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-28 13:04:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:34,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:34,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:34,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:04:34,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:34,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:04:34,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:34,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:34,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:34,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:04:34,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:04:34,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-28 13:04:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:34,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:34,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:04:34,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:34,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:04:34,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:34,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:34,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:34,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:04:34,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:34,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 322 proven. 164 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-28 13:04:35,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54352650] [2020-10-28 13:04:35,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:35,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:04:35,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882165970] [2020-10-28 13:04:35,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:04:35,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:35,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:04:35,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:04:35,018 INFO L87 Difference]: Start difference. First operand 7385 states and 9418 transitions. Second operand 8 states. [2020-10-28 13:04:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:04:49,803 INFO L93 Difference]: Finished difference Result 18986 states and 26080 transitions. [2020-10-28 13:04:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:04:49,805 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 487 [2020-10-28 13:04:49,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:04:49,851 INFO L225 Difference]: With dead ends: 18986 [2020-10-28 13:04:49,852 INFO L226 Difference]: Without dead ends: 11592 [2020-10-28 13:04:49,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:04:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11592 states. [2020-10-28 13:04:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11592 to 9966. [2020-10-28 13:04:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9966 states. [2020-10-28 13:04:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9966 states to 9966 states and 12628 transitions. [2020-10-28 13:04:50,199 INFO L78 Accepts]: Start accepts. Automaton has 9966 states and 12628 transitions. Word has length 487 [2020-10-28 13:04:50,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:04:50,200 INFO L481 AbstractCegarLoop]: Abstraction has 9966 states and 12628 transitions. [2020-10-28 13:04:50,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:04:50,200 INFO L276 IsEmpty]: Start isEmpty. Operand 9966 states and 12628 transitions. [2020-10-28 13:04:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-28 13:04:50,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:04:50,207 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:04:50,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:04:50,208 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:04:50,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:04:50,209 INFO L82 PathProgramCache]: Analyzing trace with hash 2059381378, now seen corresponding path program 1 times [2020-10-28 13:04:50,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:04:50,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492592113] [2020-10-28 13:04:50,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:04:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:50,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:51,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:52,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:52,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-10-28 13:04:52,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:04:52,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2059 [2020-10-28 13:04:52,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:52,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:04:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:04:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:04:52,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:04:52,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:04:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:52,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:52,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:52,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:04:52,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:52,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:04:52,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:52,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:52,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:52,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:04:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:52,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:52,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:04:52,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:52,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:04:52,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:52,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:52,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:04:52,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:52,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:04:52,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:52,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:04:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:52,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:53,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:53,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:04:53,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:04:53,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:04:53,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:53,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:04:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:04:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:04:53,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:53,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:04:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:04:53,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:53,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:04:53,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:04:53,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:04:53,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:04:53,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 13:04:53,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:04:53,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:04:53,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:04:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:04:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 13:04:53,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:04:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 204 proven. 19 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:04:53,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492592113] [2020-10-28 13:04:53,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:04:53,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:04:53,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912770346] [2020-10-28 13:04:53,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:04:53,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:04:53,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:04:53,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:04:53,471 INFO L87 Difference]: Start difference. First operand 9966 states and 12628 transitions. Second operand 6 states. [2020-10-28 13:05:02,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:02,477 INFO L93 Difference]: Finished difference Result 20587 states and 27881 transitions. [2020-10-28 13:05:02,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:05:02,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 509 [2020-10-28 13:05:02,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:02,527 INFO L225 Difference]: With dead ends: 20587 [2020-10-28 13:05:02,528 INFO L226 Difference]: Without dead ends: 12798 [2020-10-28 13:05:02,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:05:02,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12798 states. [2020-10-28 13:05:02,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12798 to 12445. [2020-10-28 13:05:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12445 states. [2020-10-28 13:05:02,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12445 states to 12445 states and 16555 transitions. [2020-10-28 13:05:02,854 INFO L78 Accepts]: Start accepts. Automaton has 12445 states and 16555 transitions. Word has length 509 [2020-10-28 13:05:02,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:02,856 INFO L481 AbstractCegarLoop]: Abstraction has 12445 states and 16555 transitions. [2020-10-28 13:05:02,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:05:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand 12445 states and 16555 transitions. [2020-10-28 13:05:02,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-10-28 13:05:02,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:02,870 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:02,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:05:02,871 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:02,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:02,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1855623271, now seen corresponding path program 1 times [2020-10-28 13:05:02,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:02,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747267779] [2020-10-28 13:05:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:03,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:03,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:04,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:04,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:06,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:07,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:07,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 567 [2020-10-28 13:05:07,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:05:07,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4559 [2020-10-28 13:05:07,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:07,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 537 [2020-10-28 13:05:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:05:07,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:07,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:07,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:07,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:07,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:07,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:05:07,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:07,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:07,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:07,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:07,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:07,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:07,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:05:07,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:07,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:07,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:07,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:07,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:07,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:07,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:05:07,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:07,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:07,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:07,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:07,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:07,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:05:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:08,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:08,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:08,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:05:08,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:08,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:05:08,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:08,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-28 13:05:08,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:05:08,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2020-10-28 13:05:08,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747267779] [2020-10-28 13:05:08,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:05:08,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 13:05:08,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878285649] [2020-10-28 13:05:08,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:05:08,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:08,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:05:08,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:05:08,454 INFO L87 Difference]: Start difference. First operand 12445 states and 16555 transitions. Second operand 5 states. [2020-10-28 13:05:19,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:19,299 INFO L93 Difference]: Finished difference Result 23331 states and 31669 transitions. [2020-10-28 13:05:19,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:05:19,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 551 [2020-10-28 13:05:19,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:19,345 INFO L225 Difference]: With dead ends: 23331 [2020-10-28 13:05:19,346 INFO L226 Difference]: Without dead ends: 13063 [2020-10-28 13:05:19,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:05:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13063 states. [2020-10-28 13:05:19,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13063 to 12441. [2020-10-28 13:05:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12441 states. [2020-10-28 13:05:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12441 states to 12441 states and 16532 transitions. [2020-10-28 13:05:19,635 INFO L78 Accepts]: Start accepts. Automaton has 12441 states and 16532 transitions. Word has length 551 [2020-10-28 13:05:19,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:19,636 INFO L481 AbstractCegarLoop]: Abstraction has 12441 states and 16532 transitions. [2020-10-28 13:05:19,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:05:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 12441 states and 16532 transitions. [2020-10-28 13:05:19,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-28 13:05:19,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:19,646 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:19,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:05:19,646 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:19,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:19,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1816488270, now seen corresponding path program 1 times [2020-10-28 13:05:19,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:19,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726357860] [2020-10-28 13:05:19,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:19,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:20,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:21,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:21,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:21,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 569 [2020-10-28 13:05:21,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:05:21,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1981 [2020-10-28 13:05:21,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:21,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:05:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 13:05:21,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:21,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:21,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:21,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:21,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:21,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:21,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:05:21,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:21,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:21,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:21,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:22,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:22,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:22,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:05:22,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:22,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:22,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:22,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:22,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:22,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:22,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:22,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:05:22,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:22,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:22,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:05:22,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:22,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:05:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:22,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:22,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:22,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 13:05:22,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 13:05:22,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:22,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 13:05:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:05:22,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726357860] [2020-10-28 13:05:22,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:22,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:05:22,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721276516] [2020-10-28 13:05:22,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:05:22,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:22,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:05:22,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:05:22,901 INFO L87 Difference]: Start difference. First operand 12441 states and 16532 transitions. Second operand 7 states. [2020-10-28 13:05:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:34,070 INFO L93 Difference]: Finished difference Result 26930 states and 38044 transitions. [2020-10-28 13:05:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:05:34,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 553 [2020-10-28 13:05:34,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:34,140 INFO L225 Difference]: With dead ends: 26930 [2020-10-28 13:05:34,140 INFO L226 Difference]: Without dead ends: 14802 [2020-10-28 13:05:34,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:05:34,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14802 states. [2020-10-28 13:05:34,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14802 to 14672. [2020-10-28 13:05:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14672 states. [2020-10-28 13:05:34,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14672 states to 14672 states and 19098 transitions. [2020-10-28 13:05:34,687 INFO L78 Accepts]: Start accepts. Automaton has 14672 states and 19098 transitions. Word has length 553 [2020-10-28 13:05:34,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:34,687 INFO L481 AbstractCegarLoop]: Abstraction has 14672 states and 19098 transitions. [2020-10-28 13:05:34,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand 14672 states and 19098 transitions. [2020-10-28 13:05:34,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-10-28 13:05:34,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:34,696 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:34,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:05:34,697 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:34,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:34,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1448575625, now seen corresponding path program 1 times [2020-10-28 13:05:34,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:34,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629572448] [2020-10-28 13:05:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:34,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:34,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:36,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:39,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:39,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 596 [2020-10-28 13:05:39,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:05:39,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-28 13:05:39,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:39,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 480 [2020-10-28 13:05:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:05:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:40,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:40,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:40,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:40,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:05:40,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:40,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:40,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:40,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:40,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:40,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:40,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:40,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:05:40,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:40,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:40,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:40,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:40,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:40,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:40,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:40,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:40,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:40,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:05:40,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:40,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:40,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:05:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:40,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:40,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:05:40,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:40,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:05:40,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:40,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 13:05:40,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:40,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-10-28 13:05:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:40,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:40,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:40,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:05:40,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:40,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:05:40,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:40,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 13:05:40,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-28 13:05:40,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629572448] [2020-10-28 13:05:40,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:05:40,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:05:40,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432343504] [2020-10-28 13:05:40,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:05:40,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:05:40,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:05:40,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:05:40,763 INFO L87 Difference]: Start difference. First operand 14672 states and 19098 transitions. Second operand 7 states. [2020-10-28 13:05:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:05:54,385 INFO L93 Difference]: Finished difference Result 34262 states and 45952 transitions. [2020-10-28 13:05:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:05:54,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 578 [2020-10-28 13:05:54,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:05:54,450 INFO L225 Difference]: With dead ends: 34262 [2020-10-28 13:05:54,450 INFO L226 Difference]: Without dead ends: 19524 [2020-10-28 13:05:54,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:05:54,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19524 states. [2020-10-28 13:05:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19524 to 15208. [2020-10-28 13:05:54,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15208 states. [2020-10-28 13:05:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15208 states to 15208 states and 18186 transitions. [2020-10-28 13:05:54,833 INFO L78 Accepts]: Start accepts. Automaton has 15208 states and 18186 transitions. Word has length 578 [2020-10-28 13:05:54,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:05:54,834 INFO L481 AbstractCegarLoop]: Abstraction has 15208 states and 18186 transitions. [2020-10-28 13:05:54,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:05:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 15208 states and 18186 transitions. [2020-10-28 13:05:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2020-10-28 13:05:54,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:05:54,850 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:05:54,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:05:54,850 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:05:54,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:05:54,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1437838920, now seen corresponding path program 1 times [2020-10-28 13:05:54,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:05:54,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398053638] [2020-10-28 13:05:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:05:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:55,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:55,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:56,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:59,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:59,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 653 [2020-10-28 13:05:59,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:05:59,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4268 [2020-10-28 13:05:59,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:59,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:59,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:59,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:05:59,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 13:05:59,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:59,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:05:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:59,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:59,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:59,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:05:59,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:59,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:05:59,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:59,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:59,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:59,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:59,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:59,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:59,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:05:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:59,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:59,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:05:59,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:59,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:05:59,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:59,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:59,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:05:59,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:59,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:05:59,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:05:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:59,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:59,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:59,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:05:59,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:59,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:05:59,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:59,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:05:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:05:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:05:59,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:05:59,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:05:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:05:59,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:05:59,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:05:59,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 13:05:59,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:05:59,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 13:05:59,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:05:59,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:05:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:05:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:05:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 13:05:59,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:00,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-10-28 13:06:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:00,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:00,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:00,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:06:00,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:00,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:06:00,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:00,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:06:00,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:00,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 314 proven. 85 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-28 13:06:00,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398053638] [2020-10-28 13:06:00,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:06:00,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:06:00,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146495978] [2020-10-28 13:06:00,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:06:00,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:00,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:06:00,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:06:00,337 INFO L87 Difference]: Start difference. First operand 15208 states and 18186 transitions. Second operand 7 states. [2020-10-28 13:06:03,071 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:06:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:13,898 INFO L93 Difference]: Finished difference Result 33929 states and 42683 transitions. [2020-10-28 13:06:13,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:06:13,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 635 [2020-10-28 13:06:13,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:13,965 INFO L225 Difference]: With dead ends: 33929 [2020-10-28 13:06:13,965 INFO L226 Difference]: Without dead ends: 19024 [2020-10-28 13:06:13,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:06:14,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19024 states. [2020-10-28 13:06:14,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19024 to 18606. [2020-10-28 13:06:14,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18606 states. [2020-10-28 13:06:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18606 states to 18606 states and 21913 transitions. [2020-10-28 13:06:14,441 INFO L78 Accepts]: Start accepts. Automaton has 18606 states and 21913 transitions. Word has length 635 [2020-10-28 13:06:14,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:14,441 INFO L481 AbstractCegarLoop]: Abstraction has 18606 states and 21913 transitions. [2020-10-28 13:06:14,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:06:14,442 INFO L276 IsEmpty]: Start isEmpty. Operand 18606 states and 21913 transitions. [2020-10-28 13:06:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2020-10-28 13:06:14,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:14,459 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:06:14,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:06:14,459 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:14,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:14,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1312877735, now seen corresponding path program 1 times [2020-10-28 13:06:14,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:14,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104495642] [2020-10-28 13:06:14,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:14,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:14,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:18,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:18,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 689 [2020-10-28 13:06:18,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:06:18,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3417 [2020-10-28 13:06:18,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:18,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-28 13:06:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:06:18,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:18,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:18,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:18,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:18,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:18,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:06:18,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:18,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:18,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:18,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:18,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:18,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:18,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:06:18,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:06:18,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:18,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:18,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:06:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:18,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:18,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:18,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:06:18,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:18,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:06:18,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:18,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:18,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:18,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:18,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:18,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:18,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:06:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:18,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:18,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:18,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:06:18,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:18,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:06:18,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:18,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:18,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:18,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:18,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:06:18,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:18,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-28 13:06:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:18,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:18,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:18,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:06:18,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:18,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 13:06:18,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:18,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:18,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:18,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:06:18,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 13:06:18,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2020-10-28 13:06:19,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104495642] [2020-10-28 13:06:19,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:06:19,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:06:19,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333646792] [2020-10-28 13:06:19,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:06:19,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:19,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:06:19,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:06:19,322 INFO L87 Difference]: Start difference. First operand 18606 states and 21913 transitions. Second operand 8 states. [2020-10-28 13:06:27,794 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:06:35,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:35,209 INFO L93 Difference]: Finished difference Result 36902 states and 43528 transitions. [2020-10-28 13:06:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:06:35,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 671 [2020-10-28 13:06:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:35,259 INFO L225 Difference]: With dead ends: 36902 [2020-10-28 13:06:35,260 INFO L226 Difference]: Without dead ends: 18609 [2020-10-28 13:06:35,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:06:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18609 states. [2020-10-28 13:06:35,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18609 to 18296. [2020-10-28 13:06:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18296 states. [2020-10-28 13:06:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18296 states to 18296 states and 20111 transitions. [2020-10-28 13:06:35,624 INFO L78 Accepts]: Start accepts. Automaton has 18296 states and 20111 transitions. Word has length 671 [2020-10-28 13:06:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:35,625 INFO L481 AbstractCegarLoop]: Abstraction has 18296 states and 20111 transitions. [2020-10-28 13:06:35,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:06:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 18296 states and 20111 transitions. [2020-10-28 13:06:35,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2020-10-28 13:06:35,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:35,639 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:06:35,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:06:35,640 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:35,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:35,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1139644099, now seen corresponding path program 1 times [2020-10-28 13:06:35,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:35,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522190044] [2020-10-28 13:06:35,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:36,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:38,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:40,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:40,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 693 [2020-10-28 13:06:40,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:06:40,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-28 13:06:40,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:40,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:40,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:40,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:06:40,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 13:06:40,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:41,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:41,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:41,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:41,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:41,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:06:41,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:41,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:41,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:41,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:41,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:41,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:41,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:41,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:41,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:06:41,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:41,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 13:06:41,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:41,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:41,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:06:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:41,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:06:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:41,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:41,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:41,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:06:41,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:41,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 13:06:41,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:41,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:06:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:06:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:42,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-10-28 13:06:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:42,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:42,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:42,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 13:06:42,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:42,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:06:42,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:42,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 13:06:42,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:42,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:42,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2020-10-28 13:06:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:42,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:42,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:42,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:06:42,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:42,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:06:42,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:42,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:06:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:06:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:06:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:06:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 277 proven. 206 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 13:06:42,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522190044] [2020-10-28 13:06:42,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:06:42,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:06:42,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497998126] [2020-10-28 13:06:42,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:06:42,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:42,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:06:42,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:06:42,632 INFO L87 Difference]: Start difference. First operand 18296 states and 20111 transitions. Second operand 8 states.