/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=SHALLOWEST --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/Problem18_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:28:30,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:28:30,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:28:30,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:28:30,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:28:30,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:28:30,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:28:30,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:28:30,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:28:30,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:28:30,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:28:30,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:28:30,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:28:30,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:28:30,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:28:30,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:28:30,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:28:30,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:28:30,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:28:30,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:28:30,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:28:30,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:28:30,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:28:30,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:28:30,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:28:30,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:28:30,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:28:30,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:28:30,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:28:30,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:28:30,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:28:30,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:28:30,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:28:30,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:28:30,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:28:30,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:28:30,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:28:30,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:28:30,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:28:30,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:28:30,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:28:30,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:28:30,984 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:28:30,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:28:30,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:28:30,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:28:30,987 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:28:30,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:28:30,987 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:28:30,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:28:30,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:28:30,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:28:30,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:28:30,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:28:30,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:28:30,989 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:28:30,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:28:30,989 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:28:30,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:28:30,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:28:30,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:28:30,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:28:30,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:28:30,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:28:30,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:28:30,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:28:30,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:28:30,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:28:30,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:28:30,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:28:30,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:28:30,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:28:31,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:28:31,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:28:31,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:28:31,490 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:28:31,491 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:28:31,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26.c [2020-10-27 00:28:31,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/378d5f2ac/843253a95bf54530a68c2fef4ad064ea/FLAGf3fbe17a3 [2020-10-27 00:28:32,444 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:28:32,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label26.c [2020-10-27 00:28:32,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/378d5f2ac/843253a95bf54530a68c2fef4ad064ea/FLAGf3fbe17a3 [2020-10-27 00:28:32,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/378d5f2ac/843253a95bf54530a68c2fef4ad064ea [2020-10-27 00:28:32,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:28:32,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:28:32,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:28:32,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:28:32,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:28:32,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:28:32" (1/1) ... [2020-10-27 00:28:32,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc501ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:32, skipping insertion in model container [2020-10-27 00:28:32,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:28:32" (1/1) ... [2020-10-27 00:28:32,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:28:32,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:28:33,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:28:33,812 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:28:34,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:28:34,380 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:28:34,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:34 WrapperNode [2020-10-27 00:28:34,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:28:34,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:28:34,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:28:34,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:28:34,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:34" (1/1) ... [2020-10-27 00:28:34,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:34" (1/1) ... [2020-10-27 00:28:34,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:34" (1/1) ... [2020-10-27 00:28:34,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:34" (1/1) ... [2020-10-27 00:28:34,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:34" (1/1) ... [2020-10-27 00:28:34,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:34" (1/1) ... [2020-10-27 00:28:34,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:34" (1/1) ... [2020-10-27 00:28:34,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:28:34,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:28:34,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:28:34,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:28:34,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:28:34,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:28:34,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:28:34,820 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:28:34,821 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:28:34,821 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:28:34,821 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:28:34,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:28:34,821 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:28:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:28:34,822 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:28:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:28:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:28:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:28:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:28:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:28:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:28:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:28:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:28:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:28:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:28:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:28:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:28:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:28:39,132 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:28:39,133 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:28:39,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:28:39 BoogieIcfgContainer [2020-10-27 00:28:39,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:28:39,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:28:39,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:28:39,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:28:39,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:28:32" (1/3) ... [2020-10-27 00:28:39,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c77700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:28:39, skipping insertion in model container [2020-10-27 00:28:39,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:28:34" (2/3) ... [2020-10-27 00:28:39,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c77700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:28:39, skipping insertion in model container [2020-10-27 00:28:39,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:28:39" (3/3) ... [2020-10-27 00:28:39,147 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label26.c [2020-10-27 00:28:39,160 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:28:39,168 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:28:39,184 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:28:39,219 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:28:39,220 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:28:39,220 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:28:39,220 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:28:39,220 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:28:39,220 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:28:39,221 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:28:39,221 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:28:39,271 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:28:39,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 00:28:39,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:39,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:39,289 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:39,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:39,299 INFO L82 PathProgramCache]: Analyzing trace with hash -514881776, now seen corresponding path program 1 times [2020-10-27 00:28:39,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:39,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45431629] [2020-10-27 00:28:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:39,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:40,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:40,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 00:28:40,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:40,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-27 00:28:40,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:40,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:28:40,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:28:40,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:28:40,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:28:40,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:40,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:40,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:40,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:40,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:28:40,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:40,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:28:40,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:28:40,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45431629] [2020-10-27 00:28:40,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:28:40,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:28:40,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761709277] [2020-10-27 00:28:40,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:28:40,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:40,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:28:40,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:28:40,488 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:28:54,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:54,867 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-27 00:28:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:28:54,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-27 00:28:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:54,911 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:28:54,912 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:28:54,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:28:54,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:28:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:28:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:28:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-27 00:28:55,095 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 69 [2020-10-27 00:28:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:55,096 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-27 00:28:55,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:28:55,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-27 00:28:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 00:28:55,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:55,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:28:55,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:28:55,111 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:55,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:55,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1897889653, now seen corresponding path program 1 times [2020-10-27 00:28:55,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:55,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35183316] [2020-10-27 00:28:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:55,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:55,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:56,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:56,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 00:28:56,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:28:56,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-27 00:28:56,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:28:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:28:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:28:56,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:28:56,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:56,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:56,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:56,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:56,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:56,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:28:56,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:56,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:56,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:28:56,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:28:56,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:56,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:56,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:56,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:28:56,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:56,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 00:28:56,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:28:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:28:56,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35183316] [2020-10-27 00:28:56,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:28:56,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:28:56,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082230610] [2020-10-27 00:28:56,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:28:56,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:56,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:28:56,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:28:56,690 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 7 states. [2020-10-27 00:29:07,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:07,225 INFO L93 Difference]: Finished difference Result 5047 states and 8287 transitions. [2020-10-27 00:29:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:29:07,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-10-27 00:29:07,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:07,249 INFO L225 Difference]: With dead ends: 5047 [2020-10-27 00:29:07,249 INFO L226 Difference]: Without dead ends: 2917 [2020-10-27 00:29:07,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:29:07,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-10-27 00:29:07,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2880. [2020-10-27 00:29:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2020-10-27 00:29:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4329 transitions. [2020-10-27 00:29:07,345 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4329 transitions. Word has length 140 [2020-10-27 00:29:07,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:07,346 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 4329 transitions. [2020-10-27 00:29:07,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:07,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4329 transitions. [2020-10-27 00:29:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-27 00:29:07,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:07,352 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 00:29:07,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:29:07,352 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:07,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:07,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1455185815, now seen corresponding path program 1 times [2020-10-27 00:29:07,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:07,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996568397] [2020-10-27 00:29:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:07,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:08,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:09,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:09,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 00:29:09,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:29:09,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2455 [2020-10-27 00:29:09,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:09,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-27 00:29:09,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:10,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:10,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:10,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:10,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:10,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:10,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:29:10,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:10,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:10,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:10,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:10,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:10,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:10,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 00:29:10,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:10,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-27 00:29:10,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:10,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 00:29:10,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:29:10,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996568397] [2020-10-27 00:29:10,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:29:10,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:29:10,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089345272] [2020-10-27 00:29:10,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:29:10,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:10,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:29:10,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:29:10,643 INFO L87 Difference]: Start difference. First operand 2880 states and 4329 transitions. Second operand 8 states. [2020-10-27 00:29:26,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:26,555 INFO L93 Difference]: Finished difference Result 10955 states and 16885 transitions. [2020-10-27 00:29:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 00:29:26,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-10-27 00:29:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:26,610 INFO L225 Difference]: With dead ends: 10955 [2020-10-27 00:29:26,610 INFO L226 Difference]: Without dead ends: 8081 [2020-10-27 00:29:26,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 00:29:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8081 states. [2020-10-27 00:29:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8081 to 7317. [2020-10-27 00:29:26,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7317 states. [2020-10-27 00:29:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7317 states to 7317 states and 9899 transitions. [2020-10-27 00:29:26,814 INFO L78 Accepts]: Start accepts. Automaton has 7317 states and 9899 transitions. Word has length 219 [2020-10-27 00:29:26,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:26,815 INFO L481 AbstractCegarLoop]: Abstraction has 7317 states and 9899 transitions. [2020-10-27 00:29:26,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:29:26,815 INFO L276 IsEmpty]: Start isEmpty. Operand 7317 states and 9899 transitions. [2020-10-27 00:29:26,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-27 00:29:26,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:26,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:29:26,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:29:26,820 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:26,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:26,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1573235084, now seen corresponding path program 1 times [2020-10-27 00:29:26,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:26,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622860426] [2020-10-27 00:29:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:26,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:28,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:28,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:29:28,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:29:28,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1200 [2020-10-27 00:29:28,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:28,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:28,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:28,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:29:28,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:28,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:28,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:28,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:28,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:28,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:28,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 00:29:28,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:28,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:28,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:28,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:28,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:28,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:28,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:28,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:29:28,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:28,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:29:28,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:28,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:29:28,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:28,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 00:29:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:28,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:28,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:29:28,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:28,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:29:28,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:28,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:28,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:29:28,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:28,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 122 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:29:28,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622860426] [2020-10-27 00:29:28,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:28,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:29:28,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636320377] [2020-10-27 00:29:28,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:28,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:28,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:28,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:28,497 INFO L87 Difference]: Start difference. First operand 7317 states and 9899 transitions. Second operand 7 states. [2020-10-27 00:29:41,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:41,705 INFO L93 Difference]: Finished difference Result 22265 states and 30985 transitions. [2020-10-27 00:29:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:29:41,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-27 00:29:41,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:41,781 INFO L225 Difference]: With dead ends: 22265 [2020-10-27 00:29:41,782 INFO L226 Difference]: Without dead ends: 14954 [2020-10-27 00:29:41,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:29:41,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14954 states. [2020-10-27 00:29:42,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14954 to 14054. [2020-10-27 00:29:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14054 states. [2020-10-27 00:29:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14054 states to 14054 states and 18119 transitions. [2020-10-27 00:29:42,211 INFO L78 Accepts]: Start accepts. Automaton has 14054 states and 18119 transitions. Word has length 230 [2020-10-27 00:29:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:42,212 INFO L481 AbstractCegarLoop]: Abstraction has 14054 states and 18119 transitions. [2020-10-27 00:29:42,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 14054 states and 18119 transitions. [2020-10-27 00:29:42,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-27 00:29:42,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:42,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:29:42,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:29:42,220 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:42,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:42,221 INFO L82 PathProgramCache]: Analyzing trace with hash -362785702, now seen corresponding path program 1 times [2020-10-27 00:29:42,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:42,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996996914] [2020-10-27 00:29:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:42,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:42,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:42,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:45,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:47,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:47,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-27 00:29:47,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:29:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 00:29:47,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:47,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:29:47,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:47,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:47,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:47,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:47,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:47,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:47,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:29:47,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:47,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:47,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:47,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:47,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:47,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:47,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:47,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:29:47,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:47,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 00:29:47,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:47,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:47,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:29:47,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:47,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:29:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:47,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:47,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:47,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 00:29:47,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:47,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:29:47,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 00:29:47,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:47,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 122 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:29:48,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996996914] [2020-10-27 00:29:48,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:48,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:29:48,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278911909] [2020-10-27 00:29:48,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:48,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:48,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:48,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:48,169 INFO L87 Difference]: Start difference. First operand 14054 states and 18119 transitions. Second operand 7 states. [2020-10-27 00:29:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:58,563 INFO L93 Difference]: Finished difference Result 29133 states and 38272 transitions. [2020-10-27 00:29:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:29:58,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 285 [2020-10-27 00:29:58,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:58,624 INFO L225 Difference]: With dead ends: 29133 [2020-10-27 00:29:58,625 INFO L226 Difference]: Without dead ends: 15085 [2020-10-27 00:29:58,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:29:58,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15085 states. [2020-10-27 00:29:59,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15085 to 14761. [2020-10-27 00:29:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14761 states. [2020-10-27 00:29:59,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14761 states to 14761 states and 18818 transitions. [2020-10-27 00:29:59,062 INFO L78 Accepts]: Start accepts. Automaton has 14761 states and 18818 transitions. Word has length 285 [2020-10-27 00:29:59,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:59,062 INFO L481 AbstractCegarLoop]: Abstraction has 14761 states and 18818 transitions. [2020-10-27 00:29:59,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:59,063 INFO L276 IsEmpty]: Start isEmpty. Operand 14761 states and 18818 transitions. [2020-10-27 00:29:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-27 00:29:59,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:59,076 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2020-10-27 00:29:59,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:29:59,076 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:59,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:59,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1261337605, now seen corresponding path program 1 times [2020-10-27 00:29:59,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:59,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024750692] [2020-10-27 00:29:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:59,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:59,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:00,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:01,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:01,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:04,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:04,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-27 00:30:04,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:30:04,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 00:30:04,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:30:04,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:30:04,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:04,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:04,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:04,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:04,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:04,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:30:04,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:04,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:04,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:04,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:04,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:04,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:30:04,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-27 00:30:04,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:30:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:04,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:30:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:04,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:04,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:04,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:30:04,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:04,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 00:30:04,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:04,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:04,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:30:04,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:04,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:30:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:05,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:05,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:05,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 00:30:05,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:05,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:30:05,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:05,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:05,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 00:30:05,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:05,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 306 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-27 00:30:05,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024750692] [2020-10-27 00:30:05,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:05,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:05,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139890144] [2020-10-27 00:30:05,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:05,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:05,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:05,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:05,467 INFO L87 Difference]: Start difference. First operand 14761 states and 18818 transitions. Second operand 7 states. [2020-10-27 00:30:21,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:21,993 INFO L93 Difference]: Finished difference Result 33982 states and 43780 transitions. [2020-10-27 00:30:21,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:30:21,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 471 [2020-10-27 00:30:21,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:22,063 INFO L225 Difference]: With dead ends: 33982 [2020-10-27 00:30:22,065 INFO L226 Difference]: Without dead ends: 18245 [2020-10-27 00:30:22,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18245 states. [2020-10-27 00:30:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18245 to 16773. [2020-10-27 00:30:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16773 states. [2020-10-27 00:30:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16773 states to 16773 states and 19018 transitions. [2020-10-27 00:30:22,600 INFO L78 Accepts]: Start accepts. Automaton has 16773 states and 19018 transitions. Word has length 471 [2020-10-27 00:30:22,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:22,601 INFO L481 AbstractCegarLoop]: Abstraction has 16773 states and 19018 transitions. [2020-10-27 00:30:22,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 16773 states and 19018 transitions. [2020-10-27 00:30:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-10-27 00:30:22,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:22,616 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-27 00:30:22,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:30:22,616 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:22,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:22,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1692796887, now seen corresponding path program 1 times [2020-10-27 00:30:22,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:22,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523289504] [2020-10-27 00:30:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:22,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:22,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:25,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:27,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:27,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 573 [2020-10-27 00:30:27,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:30:27,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 00:30:27,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:27,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:30:27,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:27,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:30:27,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:27,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:27,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:27,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:27,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:27,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:27,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:30:27,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:27,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:27,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:28,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:28,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:28,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:30:28,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:28,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-27 00:30:28,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:30:28,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:29,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:29,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:29,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:29,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:30:29,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:29,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:30:29,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:30:29,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:29,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:30:29,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:29,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:30:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:29,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:29,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:29,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:30:29,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:29,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:30:29,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 00:30:29,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:29,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:29,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-27 00:30:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:29,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:29,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:29,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:30:29,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:29,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:30:29,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 00:30:29,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:29,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 183 proven. 169 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-27 00:30:30,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523289504] [2020-10-27 00:30:30,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:30,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:30:30,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701205730] [2020-10-27 00:30:30,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:30:30,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:30,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:30:30,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:30:30,074 INFO L87 Difference]: Start difference. First operand 16773 states and 19018 transitions. Second operand 8 states. [2020-10-27 00:30:39,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:39,393 INFO L93 Difference]: Finished difference Result 42413 states and 49497 transitions. [2020-10-27 00:30:39,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 00:30:39,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 555 [2020-10-27 00:30:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:39,470 INFO L225 Difference]: With dead ends: 42413 [2020-10-27 00:30:39,471 INFO L226 Difference]: Without dead ends: 26348 [2020-10-27 00:30:39,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-27 00:30:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26348 states. [2020-10-27 00:30:39,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26348 to 25539. [2020-10-27 00:30:39,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25539 states. [2020-10-27 00:30:40,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25539 states to 25539 states and 29056 transitions. [2020-10-27 00:30:40,040 INFO L78 Accepts]: Start accepts. Automaton has 25539 states and 29056 transitions. Word has length 555 [2020-10-27 00:30:40,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:40,041 INFO L481 AbstractCegarLoop]: Abstraction has 25539 states and 29056 transitions. [2020-10-27 00:30:40,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:30:40,041 INFO L276 IsEmpty]: Start isEmpty. Operand 25539 states and 29056 transitions. [2020-10-27 00:30:40,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2020-10-27 00:30:40,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:40,087 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:40,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:30:40,087 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:40,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:40,088 INFO L82 PathProgramCache]: Analyzing trace with hash 214264874, now seen corresponding path program 1 times [2020-10-27 00:30:40,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:40,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453798192] [2020-10-27 00:30:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:40,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:41,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:45,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:45,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1106 [2020-10-27 00:30:45,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:30:45,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-27 00:30:45,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:45,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:30:45,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:30:45,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:45,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:45,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:45,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:45,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:45,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:30:45,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:45,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:45,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:45,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:45,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:45,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:45,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:30:45,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:45,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:30:45,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:45,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:45,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:45,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:46,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:46,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:30:46,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:46,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:30:46,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:46,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:46,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:46,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:30:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:46,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:46,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:30:46,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:46,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:30:46,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:46,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:46,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:46,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:46,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:46,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:30:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:46,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:46,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:46,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:30:46,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:46,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 00:30:46,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:46,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:46,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:46,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:30:46,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:46,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:46,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:46,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:46,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:30:46,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:46,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 00:30:46,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:46,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:30:46,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:46,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:30:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:46,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:46,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:46,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:30:46,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:46,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 00:30:46,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:46,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:46,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:46,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:30:46,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:46,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-27 00:30:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:46,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:46,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:46,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:30:46,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:46,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:30:46,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:46,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 00:30:46,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:46,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 434 proven. 88 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2020-10-27 00:30:47,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453798192] [2020-10-27 00:30:47,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:47,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:47,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718466759] [2020-10-27 00:30:47,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:47,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:47,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:47,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:47,637 INFO L87 Difference]: Start difference. First operand 25539 states and 29056 transitions. Second operand 7 states. [2020-10-27 00:30:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:57,221 INFO L93 Difference]: Finished difference Result 61139 states and 71401 transitions. [2020-10-27 00:30:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:30:57,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1082 [2020-10-27 00:30:57,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:57,317 INFO L225 Difference]: With dead ends: 61139 [2020-10-27 00:30:57,317 INFO L226 Difference]: Without dead ends: 37018 [2020-10-27 00:30:57,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:57,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37018 states. [2020-10-27 00:30:58,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37018 to 36971. [2020-10-27 00:30:58,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36971 states. [2020-10-27 00:30:58,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36971 states to 36971 states and 42478 transitions. [2020-10-27 00:30:58,135 INFO L78 Accepts]: Start accepts. Automaton has 36971 states and 42478 transitions. Word has length 1082 [2020-10-27 00:30:58,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:58,137 INFO L481 AbstractCegarLoop]: Abstraction has 36971 states and 42478 transitions. [2020-10-27 00:30:58,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand 36971 states and 42478 transitions. [2020-10-27 00:30:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1120 [2020-10-27 00:30:58,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:58,197 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:58,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:30:58,198 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:58,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:58,199 INFO L82 PathProgramCache]: Analyzing trace with hash 551486024, now seen corresponding path program 1 times [2020-10-27 00:30:58,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:58,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596066261] [2020-10-27 00:30:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:58,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:01,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:03,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:03,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1143 [2020-10-27 00:31:03,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:31:03,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-27 00:31:03,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:31:03,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:31:03,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:03,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:03,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:03,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:03,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:03,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:03,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:04,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:04,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:04,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:04,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 00:31:04,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:04,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:04,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:04,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:04,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:04,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 00:31:04,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:04,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:04,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:04,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:04,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:04,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:04,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:04,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:04,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:04,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:04,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:04,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:04,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:04,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 00:31:04,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:31:04,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:04,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:04,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:04,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:04,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:04,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:04,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:31:04,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:04,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:04,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:31:04,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:04,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:04,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:04,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:04,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:31:04,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:04,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 00:31:04,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:04,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:04,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:31:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:05,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:31:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:05,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:05,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:05,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 00:31:05,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:05,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 00:31:05,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 00:31:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:05,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 498 proven. 93 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2020-10-27 00:31:05,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596066261] [2020-10-27 00:31:05,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:05,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:05,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998575559] [2020-10-27 00:31:05,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:05,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:05,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:05,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:05,763 INFO L87 Difference]: Start difference. First operand 36971 states and 42478 transitions. Second operand 7 states. [2020-10-27 00:31:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:20,073 INFO L93 Difference]: Finished difference Result 79000 states and 91383 transitions. [2020-10-27 00:31:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:31:20,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1119 [2020-10-27 00:31:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:20,190 INFO L225 Difference]: With dead ends: 79000 [2020-10-27 00:31:20,190 INFO L226 Difference]: Without dead ends: 43447 [2020-10-27 00:31:20,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:20,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43447 states. [2020-10-27 00:31:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43447 to 43373. [2020-10-27 00:31:20,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43373 states. [2020-10-27 00:31:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43373 states to 43373 states and 49314 transitions. [2020-10-27 00:31:21,100 INFO L78 Accepts]: Start accepts. Automaton has 43373 states and 49314 transitions. Word has length 1119 [2020-10-27 00:31:21,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:21,102 INFO L481 AbstractCegarLoop]: Abstraction has 43373 states and 49314 transitions. [2020-10-27 00:31:21,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 43373 states and 49314 transitions. [2020-10-27 00:31:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1180 [2020-10-27 00:31:21,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:21,126 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:21,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:31:21,127 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:21,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1773510839, now seen corresponding path program 1 times [2020-10-27 00:31:21,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:21,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767170862] [2020-10-27 00:31:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:21,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:22,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1205 [2020-10-27 00:31:26,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:31:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 00:31:26,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:31:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:31:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:26,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:26,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:26,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:26,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:31:26,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:26,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:26,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:26,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:26,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:26,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 00:31:26,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:26,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:26,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:26,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:26,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:26,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:26,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:26,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:26,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:31:26,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:26,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:27,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:27,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:27,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:27,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:27,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:27,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:31:27,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:27,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:27,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:27,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:27,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:27,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:27,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:27,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:27,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:27,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:27,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 00:31:27,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:27,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:31:27,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:27,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:27,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:27,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:27,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:27,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:27,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 00:31:27,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:31:27,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:27,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:27,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:27,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:27,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:31:27,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:27,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:31:27,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:27,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:27,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:27,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:31:27,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-27 00:31:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:27,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:27,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:27,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:31:27,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:27,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:31:27,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-27 00:31:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:27,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1029 [2020-10-27 00:31:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:27,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:27,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:27,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:31:27,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:27,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:31:27,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-27 00:31:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:27,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 475 proven. 148 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2020-10-27 00:31:28,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767170862] [2020-10-27 00:31:28,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:28,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:28,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902558588] [2020-10-27 00:31:28,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:28,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:28,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:28,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:28,339 INFO L87 Difference]: Start difference. First operand 43373 states and 49314 transitions. Second operand 7 states. [2020-10-27 00:31:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:37,942 INFO L93 Difference]: Finished difference Result 107267 states and 124467 transitions. [2020-10-27 00:31:37,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:37,943 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1179 [2020-10-27 00:31:37,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:38,098 INFO L225 Difference]: With dead ends: 107267 [2020-10-27 00:31:38,099 INFO L226 Difference]: Without dead ends: 65312 [2020-10-27 00:31:38,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:38,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65312 states. [2020-10-27 00:31:39,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65312 to 64578. [2020-10-27 00:31:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64578 states. [2020-10-27 00:31:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64578 states to 64578 states and 74814 transitions. [2020-10-27 00:31:39,551 INFO L78 Accepts]: Start accepts. Automaton has 64578 states and 74814 transitions. Word has length 1179 [2020-10-27 00:31:39,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:39,555 INFO L481 AbstractCegarLoop]: Abstraction has 64578 states and 74814 transitions. [2020-10-27 00:31:39,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:39,555 INFO L276 IsEmpty]: Start isEmpty. Operand 64578 states and 74814 transitions. [2020-10-27 00:31:39,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1247 [2020-10-27 00:31:39,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:39,591 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:39,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:31:39,591 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:39,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1623041739, now seen corresponding path program 1 times [2020-10-27 00:31:39,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:39,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489707651] [2020-10-27 00:31:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1272 [2020-10-27 00:31:44,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:31:44,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3941 [2020-10-27 00:31:44,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:44,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:31:44,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:31:44,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:44,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:31:44,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:31:44,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:31:44,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:31:44,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:31:44,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:31:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:31:44,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:31:44,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:31:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:44,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:44,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:44,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:31:44,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:44,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:31:44,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:44,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:44,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:31:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:31:45,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 00:31:45,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:45,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:31:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:31:45,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:31:45,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:45,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:45,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:31:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:31:45,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:31:45,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:31:45,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:45,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-27 00:31:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:45,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:45,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:45,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 00:31:45,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:45,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 00:31:45,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:45,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:45,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 00:31:45,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 664 proven. 2 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2020-10-27 00:31:46,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489707651] [2020-10-27 00:31:46,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:46,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:46,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658616373] [2020-10-27 00:31:46,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:46,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:46,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:46,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:46,180 INFO L87 Difference]: Start difference. First operand 64578 states and 74814 transitions. Second operand 7 states. [2020-10-27 00:32:01,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:01,428 INFO L93 Difference]: Finished difference Result 141885 states and 166099 transitions. [2020-10-27 00:32:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:32:01,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1246 [2020-10-27 00:32:01,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:01,649 INFO L225 Difference]: With dead ends: 141885 [2020-10-27 00:32:01,649 INFO L226 Difference]: Without dead ends: 78725 [2020-10-27 00:32:01,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78725 states. [2020-10-27 00:32:03,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78725 to 76600. [2020-10-27 00:32:03,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76600 states. [2020-10-27 00:32:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76600 states to 76600 states and 88130 transitions. [2020-10-27 00:32:03,509 INFO L78 Accepts]: Start accepts. Automaton has 76600 states and 88130 transitions. Word has length 1246 [2020-10-27 00:32:03,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:03,511 INFO L481 AbstractCegarLoop]: Abstraction has 76600 states and 88130 transitions. [2020-10-27 00:32:03,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 76600 states and 88130 transitions. [2020-10-27 00:32:03,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1343 [2020-10-27 00:32:03,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:03,831 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:03,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:32:03,832 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:03,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:03,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1904806721, now seen corresponding path program 1 times [2020-10-27 00:32:03,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:03,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879453312] [2020-10-27 00:32:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:04,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:04,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking...