/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:28:58,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:28:58,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:28:58,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:28:58,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:28:58,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:28:58,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:28:58,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:28:58,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:28:58,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:28:58,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:28:58,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:28:58,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:28:58,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:28:58,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:28:58,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:28:58,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:28:58,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:28:58,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:28:58,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:28:58,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:28:58,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:28:58,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:28:58,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:28:58,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:28:58,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:28:58,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:28:58,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:28:58,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:28:58,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:28:58,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:28:58,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:28:58,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:28:58,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:28:58,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:28:58,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:28:58,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:28:58,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:28:58,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:28:58,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:28:58,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:28:58,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:28:58,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:28:58,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:28:58,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:28:58,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:28:58,933 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:28:58,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:28:58,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:28:58,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:28:58,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:28:58,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:28:58,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:28:58,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:28:58,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:28:58,936 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:28:58,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:28:58,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:28:58,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:28:58,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:28:58,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:28:58,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:28:58,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:28:58,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:28:58,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:28:58,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:28:58,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:28:58,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:28:58,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:28:58,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:28:58,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:28:58,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:28:59,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:28:59,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:28:59,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:28:59,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:28:59,429 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:28:59,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label57.c [2020-10-28 13:28:59,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e1492acd/54d35a650e50418080d86059a69d8099/FLAGd50ef9399 [2020-10-28 13:29:00,462 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:29:00,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label57.c [2020-10-28 13:29:00,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e1492acd/54d35a650e50418080d86059a69d8099/FLAGd50ef9399 [2020-10-28 13:29:00,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e1492acd/54d35a650e50418080d86059a69d8099 [2020-10-28 13:29:00,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:29:00,560 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:29:00,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:29:00,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:29:00,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:29:00,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:29:00" (1/1) ... [2020-10-28 13:29:00,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc40e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:00, skipping insertion in model container [2020-10-28 13:29:00,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:29:00" (1/1) ... [2020-10-28 13:29:00,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:29:00,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:29:01,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:29:01,477 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:29:01,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:29:01,837 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:29:01,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:01 WrapperNode [2020-10-28 13:29:01,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:29:01,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:29:01,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:29:01,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:29:01,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:01" (1/1) ... [2020-10-28 13:29:01,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:01" (1/1) ... [2020-10-28 13:29:01,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:01" (1/1) ... [2020-10-28 13:29:01,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:01" (1/1) ... [2020-10-28 13:29:01,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:01" (1/1) ... [2020-10-28 13:29:02,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:01" (1/1) ... [2020-10-28 13:29:02,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:01" (1/1) ... [2020-10-28 13:29:02,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:29:02,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:29:02,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:29:02,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:29:02,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:29:02,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:29:02,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:29:02,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:29:02,153 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:29:02,153 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:29:02,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:29:02,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:29:02,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:29:02,155 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:29:02,155 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:29:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:29:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:29:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:29:02,156 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:29:02,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:29:02,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:29:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:29:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:29:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:29:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:29:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:29:04,962 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:29:04,962 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:29:04,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:29:04 BoogieIcfgContainer [2020-10-28 13:29:04,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:29:04,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:29:04,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:29:04,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:29:04,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:29:00" (1/3) ... [2020-10-28 13:29:04,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f10ec4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:29:04, skipping insertion in model container [2020-10-28 13:29:04,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:01" (2/3) ... [2020-10-28 13:29:04,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f10ec4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:29:04, skipping insertion in model container [2020-10-28 13:29:04,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:29:04" (3/3) ... [2020-10-28 13:29:04,975 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label57.c [2020-10-28 13:29:04,988 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:29:04,994 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:29:05,008 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:29:05,041 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:29:05,041 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:29:05,041 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:29:05,041 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:29:05,042 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:29:05,042 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:29:05,042 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:29:05,042 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:29:05,071 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:29:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 13:29:05,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:05,081 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] [2020-10-28 13:29:05,081 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:05,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:05,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1220316140, now seen corresponding path program 1 times [2020-10-28 13:29:05,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:05,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575531163] [2020-10-28 13:29:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:05,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:05,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 13:29:05,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-28 13:29:05,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:05,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:29:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:29:05,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 13:29:05,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:29:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:06,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:06,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:06,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:06,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:06,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:29:06,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:06,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:06,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:29:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:29:06,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575531163] [2020-10-28 13:29:06,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:29:06,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:29:06,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547600228] [2020-10-28 13:29:06,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:29:06,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:06,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:29:06,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:29:06,262 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:29:06,439 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:29:11,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:11,207 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-28 13:29:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:29:11,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-28 13:29:11,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:11,244 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:29:11,244 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:29:11,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:29:11,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:29:11,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-28 13:29:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-28 13:29:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-28 13:29:11,370 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 47 [2020-10-28 13:29:11,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:11,372 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-28 13:29:11,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:29:11,372 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-28 13:29:11,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 13:29:11,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:11,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:11,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:29:11,379 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:11,380 INFO L82 PathProgramCache]: Analyzing trace with hash -232989419, now seen corresponding path program 1 times [2020-10-28 13:29:11,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:11,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487234310] [2020-10-28 13:29:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:11,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:11,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:12,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:12,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 13:29:12,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:29:12,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1175 [2020-10-28 13:29:12,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:12,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:29:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:29:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:29:12,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:29:12,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:12,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:12,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:12,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:12,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:29:12,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:12,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:29:12,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:12,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:12,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:12,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:12,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:29:12,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 13:29:12,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:12,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:29:12,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:29:13,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487234310] [2020-10-28 13:29:13,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:29:13,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:29:13,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568655826] [2020-10-28 13:29:13,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:13,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:13,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:13,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:13,146 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-28 13:29:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:18,390 INFO L93 Difference]: Finished difference Result 2081 states and 3078 transitions. [2020-10-28 13:29:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:29:18,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-28 13:29:18,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:18,400 INFO L225 Difference]: With dead ends: 2081 [2020-10-28 13:29:18,400 INFO L226 Difference]: Without dead ends: 1394 [2020-10-28 13:29:18,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:29:18,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-10-28 13:29:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1386. [2020-10-28 13:29:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1386 states. [2020-10-28 13:29:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1822 transitions. [2020-10-28 13:29:18,497 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1822 transitions. Word has length 123 [2020-10-28 13:29:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:18,498 INFO L481 AbstractCegarLoop]: Abstraction has 1386 states and 1822 transitions. [2020-10-28 13:29:18,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1822 transitions. [2020-10-28 13:29:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-28 13:29:18,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:18,505 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:18,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:29:18,506 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:18,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:18,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1230817210, now seen corresponding path program 1 times [2020-10-28 13:29:18,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:18,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884303640] [2020-10-28 13:29:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:18,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:19,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:19,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:19,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:20,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:23,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:23,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:29:23,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:29:23,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4913 [2020-10-28 13:29:23,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:23,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:29:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:29:23,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 13:29:23,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:23,728 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:29:23,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:23,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:23,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:23,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:23,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:29:23,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:23,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:23,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:23,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:23,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:23,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:23,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:29:23,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:29:23,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:23,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:29:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:23,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:29:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:23,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:23,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:24,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:24,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:29:24,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:29:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 13:29:24,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:24,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:29:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 106 proven. 39 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:29:24,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884303640] [2020-10-28 13:29:24,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:24,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:29:24,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941666414] [2020-10-28 13:29:24,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:29:24,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:24,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:29:24,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:29:24,131 INFO L87 Difference]: Start difference. First operand 1386 states and 1822 transitions. Second operand 6 states. [2020-10-28 13:29:29,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:29,160 INFO L93 Difference]: Finished difference Result 3503 states and 4787 transitions. [2020-10-28 13:29:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:29:29,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 210 [2020-10-28 13:29:29,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:29,174 INFO L225 Difference]: With dead ends: 3503 [2020-10-28 13:29:29,175 INFO L226 Difference]: Without dead ends: 2123 [2020-10-28 13:29:29,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:29:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2020-10-28 13:29:29,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2100. [2020-10-28 13:29:29,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-10-28 13:29:29,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2648 transitions. [2020-10-28 13:29:29,249 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2648 transitions. Word has length 210 [2020-10-28 13:29:29,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:29,250 INFO L481 AbstractCegarLoop]: Abstraction has 2100 states and 2648 transitions. [2020-10-28 13:29:29,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:29:29,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2648 transitions. [2020-10-28 13:29:29,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-28 13:29:29,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:29,256 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:29:29,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:29:29,256 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:29,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:29,257 INFO L82 PathProgramCache]: Analyzing trace with hash 608922504, now seen corresponding path program 1 times [2020-10-28 13:29:29,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:29,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888938452] [2020-10-28 13:29:29,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:29,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:29,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:30,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:33,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:33,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-28 13:29:33,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:29:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3925 [2020-10-28 13:29:33,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:33,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:33,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:33,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:29:33,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:29:33,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:29:33,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:33,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:33,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:33,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:33,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:33,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:29:33,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:33,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:33,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:33,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:33,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:33,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:33,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:33,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:29:33,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:33,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 13:29:33,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:33,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:33,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:33,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:29:33,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:33,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:29:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:33,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:33,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:33,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:29:33,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:33,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 13:29:33,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:33,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:33,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:33,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:33,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:29:33,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:29:34,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888938452] [2020-10-28 13:29:34,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:34,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:34,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541287848] [2020-10-28 13:29:34,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:34,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:34,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:34,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:34,029 INFO L87 Difference]: Start difference. First operand 2100 states and 2648 transitions. Second operand 7 states. [2020-10-28 13:29:40,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:40,150 INFO L93 Difference]: Finished difference Result 5297 states and 6914 transitions. [2020-10-28 13:29:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:29:40,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2020-10-28 13:29:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:40,177 INFO L225 Difference]: With dead ends: 5297 [2020-10-28 13:29:40,177 INFO L226 Difference]: Without dead ends: 3203 [2020-10-28 13:29:40,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:29:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2020-10-28 13:29:40,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3161. [2020-10-28 13:29:40,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3161 states. [2020-10-28 13:29:40,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 3845 transitions. [2020-10-28 13:29:40,289 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 3845 transitions. Word has length 276 [2020-10-28 13:29:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:40,290 INFO L481 AbstractCegarLoop]: Abstraction has 3161 states and 3845 transitions. [2020-10-28 13:29:40,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 3845 transitions. [2020-10-28 13:29:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-28 13:29:40,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:40,299 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:29:40,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:29:40,300 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:40,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:40,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1298306508, now seen corresponding path program 1 times [2020-10-28 13:29:40,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:40,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869163073] [2020-10-28 13:29:40,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:40,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:40,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:40,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:41,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:43,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:45,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:45,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-28 13:29:45,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:29:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 13:29:45,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:45,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:29:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:29:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-28 13:29:45,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:45,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:45,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:45,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:45,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:45,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:29:45,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:45,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:29:45,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:45,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:45,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:46,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:46,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:29:46,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:46,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-28 13:29:46,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:46,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:46,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:46,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:29:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:46,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-28 13:29:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:46,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:46,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:46,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:29:46,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:46,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:29:46,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:46,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:29:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:46,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 78 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:29:46,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869163073] [2020-10-28 13:29:46,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:46,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:46,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304654649] [2020-10-28 13:29:46,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:46,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:46,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:46,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:46,741 INFO L87 Difference]: Start difference. First operand 3161 states and 3845 transitions. Second operand 7 states. [2020-10-28 13:29:52,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:52,053 INFO L93 Difference]: Finished difference Result 7077 states and 8584 transitions. [2020-10-28 13:29:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:29:52,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 365 [2020-10-28 13:29:52,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:52,073 INFO L225 Difference]: With dead ends: 7077 [2020-10-28 13:29:52,074 INFO L226 Difference]: Without dead ends: 3922 [2020-10-28 13:29:52,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:29:52,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2020-10-28 13:29:52,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3864. [2020-10-28 13:29:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3864 states. [2020-10-28 13:29:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 4613 transitions. [2020-10-28 13:29:52,185 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 4613 transitions. Word has length 365 [2020-10-28 13:29:52,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:52,186 INFO L481 AbstractCegarLoop]: Abstraction has 3864 states and 4613 transitions. [2020-10-28 13:29:52,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:52,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 4613 transitions. [2020-10-28 13:29:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-28 13:29:52,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:52,197 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:29:52,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:29:52,197 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:52,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:52,198 INFO L82 PathProgramCache]: Analyzing trace with hash -441926752, now seen corresponding path program 1 times [2020-10-28 13:29:52,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:52,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845725951] [2020-10-28 13:29:52,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:54,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:56,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:56,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-28 13:29:56,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:29:56,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4508 [2020-10-28 13:29:56,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:56,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:29:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:29:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:56,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:56,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:56,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:56,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:29:56,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:56,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:56,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:56,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:56,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:56,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:57,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:57,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:29:57,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:29:57,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:57,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:57,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:57,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:57,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:29:57,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:57,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:29:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:57,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:57,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:29:57,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:57,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-28 13:29:57,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:57,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:29:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:29:58,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845725951] [2020-10-28 13:29:58,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:58,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:58,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590381464] [2020-10-28 13:29:58,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:58,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:58,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:58,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:58,665 INFO L87 Difference]: Start difference. First operand 3864 states and 4613 transitions. Second operand 7 states. [2020-10-28 13:30:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:04,041 INFO L93 Difference]: Finished difference Result 9149 states and 11293 transitions. [2020-10-28 13:30:04,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:30:04,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2020-10-28 13:30:04,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:04,067 INFO L225 Difference]: With dead ends: 9149 [2020-10-28 13:30:04,068 INFO L226 Difference]: Without dead ends: 4871 [2020-10-28 13:30:04,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:30:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2020-10-28 13:30:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4841. [2020-10-28 13:30:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4841 states. [2020-10-28 13:30:04,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4841 states to 4841 states and 5223 transitions. [2020-10-28 13:30:04,198 INFO L78 Accepts]: Start accepts. Automaton has 4841 states and 5223 transitions. Word has length 411 [2020-10-28 13:30:04,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:04,199 INFO L481 AbstractCegarLoop]: Abstraction has 4841 states and 5223 transitions. [2020-10-28 13:30:04,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4841 states and 5223 transitions. [2020-10-28 13:30:04,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-28 13:30:04,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:04,209 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:30:04,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:30:04,209 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:04,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:04,210 INFO L82 PathProgramCache]: Analyzing trace with hash 168682972, now seen corresponding path program 1 times [2020-10-28 13:30:04,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:04,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207074962] [2020-10-28 13:30:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:05,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:05,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-28 13:30:05,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:30:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1321 [2020-10-28 13:30:05,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:05,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:05,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:30:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:30:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:30:05,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:05,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:05,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:05,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:05,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:05,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:30:05,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:05,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:05,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:05,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:05,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:05,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:05,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:05,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:06,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:06,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:06,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:06,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 13:30:06,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:06,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:06,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:06,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:30:06,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:06,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:06,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:06,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:06,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:30:06,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 13:30:06,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:06,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:06,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:06,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:30:06,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:30:06,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207074962] [2020-10-28 13:30:06,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:06,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:06,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397250730] [2020-10-28 13:30:06,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:06,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:06,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:06,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:06,715 INFO L87 Difference]: Start difference. First operand 4841 states and 5223 transitions. Second operand 7 states. [2020-10-28 13:30:11,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:11,228 INFO L93 Difference]: Finished difference Result 10725 states and 11767 transitions. [2020-10-28 13:30:11,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:30:11,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 449 [2020-10-28 13:30:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:11,268 INFO L225 Difference]: With dead ends: 10725 [2020-10-28 13:30:11,268 INFO L226 Difference]: Without dead ends: 6227 [2020-10-28 13:30:11,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:30:11,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6227 states. [2020-10-28 13:30:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6227 to 5878. [2020-10-28 13:30:11,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5878 states. [2020-10-28 13:30:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 6316 transitions. [2020-10-28 13:30:11,429 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 6316 transitions. Word has length 449 [2020-10-28 13:30:11,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:11,430 INFO L481 AbstractCegarLoop]: Abstraction has 5878 states and 6316 transitions. [2020-10-28 13:30:11,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 6316 transitions. [2020-10-28 13:30:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2020-10-28 13:30:11,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:11,449 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:11,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:30:11,450 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:11,453 INFO L82 PathProgramCache]: Analyzing trace with hash 927965309, now seen corresponding path program 1 times [2020-10-28 13:30:11,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:11,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274737229] [2020-10-28 13:30:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:11,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:11,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:12,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:16,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:16,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:16,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 628 [2020-10-28 13:30:16,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:30:16,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 13:30:16,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:16,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:30:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:30:16,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:16,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:16,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:16,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:16,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:16,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:30:16,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:16,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:16,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:16,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:16,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:16,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:16,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:16,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:30:16,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:16,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:30:16,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:16,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:16,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:30:16,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:17,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:30:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:17,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:17,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:17,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:30:17,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:17,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 13:30:17,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:17,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:17,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:17,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:17,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:30:17,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:17,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:30:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:17,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:17,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:17,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:30:17,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:17,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:30:17,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:17,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:30:17,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:17,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 365 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-28 13:30:17,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274737229] [2020-10-28 13:30:17,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:17,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:17,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709683983] [2020-10-28 13:30:17,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:17,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:17,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:17,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:17,993 INFO L87 Difference]: Start difference. First operand 5878 states and 6316 transitions. Second operand 7 states. [2020-10-28 13:30:22,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:22,146 INFO L93 Difference]: Finished difference Result 11437 states and 12327 transitions. [2020-10-28 13:30:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:30:22,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 612 [2020-10-28 13:30:22,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:22,172 INFO L225 Difference]: With dead ends: 11437 [2020-10-28 13:30:22,173 INFO L226 Difference]: Without dead ends: 5904 [2020-10-28 13:30:22,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 13:30:22,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5904 states. [2020-10-28 13:30:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5904 to 5882. [2020-10-28 13:30:22,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5882 states. [2020-10-28 13:30:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5882 states to 5882 states and 6316 transitions. [2020-10-28 13:30:22,318 INFO L78 Accepts]: Start accepts. Automaton has 5882 states and 6316 transitions. Word has length 612 [2020-10-28 13:30:22,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:22,319 INFO L481 AbstractCegarLoop]: Abstraction has 5882 states and 6316 transitions. [2020-10-28 13:30:22,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:22,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5882 states and 6316 transitions. [2020-10-28 13:30:22,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2020-10-28 13:30:22,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:22,341 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:22,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:30:22,341 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:22,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:22,342 INFO L82 PathProgramCache]: Analyzing trace with hash 149882506, now seen corresponding path program 1 times [2020-10-28 13:30:22,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:22,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956747757] [2020-10-28 13:30:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:22,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:22,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:25,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:27,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:27,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 664 [2020-10-28 13:30:27,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:30:27,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 13:30:27,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:27,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:27,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:30:27,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:30:27,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:27,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:27,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:27,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:27,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:27,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:30:27,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:27,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:27,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:27,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:27,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:27,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:27,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:27,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:27,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 13:30:27,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:27,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:30:27,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:28,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:28,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:28,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:28,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:30:28,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:28,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 13:30:28,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:28,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:30:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:28,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:30:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:28,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:28,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:28,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:30:28,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:28,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:30:28,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:28,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:30:28,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:30:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:28,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:28,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:28,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:30:28,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:28,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:30:28,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:28,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:28,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:28,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:30:28,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:28,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 323 proven. 194 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2020-10-28 13:30:29,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956747757] [2020-10-28 13:30:29,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:29,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:29,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968350079] [2020-10-28 13:30:29,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:29,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:29,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:29,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:29,042 INFO L87 Difference]: Start difference. First operand 5882 states and 6316 transitions. Second operand 7 states. [2020-10-28 13:30:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:32,865 INFO L93 Difference]: Finished difference Result 13473 states and 14524 transitions. [2020-10-28 13:30:32,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:30:32,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 646 [2020-10-28 13:30:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:32,891 INFO L225 Difference]: With dead ends: 13473 [2020-10-28 13:30:32,892 INFO L226 Difference]: Without dead ends: 7936 [2020-10-28 13:30:32,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:30:32,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7936 states. [2020-10-28 13:30:33,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7936 to 7250. [2020-10-28 13:30:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7250 states. [2020-10-28 13:30:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7250 states to 7250 states and 7790 transitions. [2020-10-28 13:30:33,067 INFO L78 Accepts]: Start accepts. Automaton has 7250 states and 7790 transitions. Word has length 646 [2020-10-28 13:30:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:33,069 INFO L481 AbstractCegarLoop]: Abstraction has 7250 states and 7790 transitions. [2020-10-28 13:30:33,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 7250 states and 7790 transitions. [2020-10-28 13:30:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2020-10-28 13:30:33,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:33,079 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:33,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:30:33,079 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:33,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:33,080 INFO L82 PathProgramCache]: Analyzing trace with hash 998426748, now seen corresponding path program 1 times [2020-10-28 13:30:33,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:33,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878522496] [2020-10-28 13:30:33,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:33,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:38,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:38,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 725 [2020-10-28 13:30:38,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:30:38,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-28 13:30:38,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:38,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-28 13:30:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:30:38,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:38,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:38,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:38,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:38,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:38,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:30:38,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:38,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:38,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:38,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:38,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:38,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:38,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:30:38,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:38,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:38,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:38,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:38,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:38,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:38,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:38,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:30:38,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:38,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 13:30:38,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:38,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:38,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:38,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:38,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 13:30:38,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:38,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:30:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:38,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:30:39,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:30:39,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:39,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:39,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:30:39,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:30:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:39,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:39,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:39,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:30:39,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:39,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:30:39,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:39,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:39,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:39,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:30:39,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:39,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 421 proven. 68 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2020-10-28 13:30:39,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878522496] [2020-10-28 13:30:39,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:39,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:39,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772230555] [2020-10-28 13:30:39,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:39,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:39,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:39,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:39,585 INFO L87 Difference]: Start difference. First operand 7250 states and 7790 transitions. Second operand 7 states. [2020-10-28 13:30:43,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:43,755 INFO L93 Difference]: Finished difference Result 14510 states and 15634 transitions. [2020-10-28 13:30:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:30:43,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 707 [2020-10-28 13:30:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:43,782 INFO L225 Difference]: With dead ends: 14510 [2020-10-28 13:30:43,782 INFO L226 Difference]: Without dead ends: 7605 [2020-10-28 13:30:43,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:30:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2020-10-28 13:30:44,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 7593. [2020-10-28 13:30:44,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7593 states. [2020-10-28 13:30:44,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 8147 transitions. [2020-10-28 13:30:44,028 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 8147 transitions. Word has length 707 [2020-10-28 13:30:44,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:44,030 INFO L481 AbstractCegarLoop]: Abstraction has 7593 states and 8147 transitions. [2020-10-28 13:30:44,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:44,030 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 8147 transitions. [2020-10-28 13:30:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2020-10-28 13:30:44,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:44,046 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:44,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:30:44,047 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:44,048 INFO L82 PathProgramCache]: Analyzing trace with hash -270604096, now seen corresponding path program 1 times [2020-10-28 13:30:44,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:44,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713269506] [2020-10-28 13:30:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:44,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:44,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:46,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:49,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:49,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 727 [2020-10-28 13:30:49,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:30:49,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 13:30:49,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:49,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-28 13:30:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:30:49,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:49,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:49,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:49,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:49,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:49,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:30:49,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:49,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:49,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:49,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:49,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:49,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:49,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:49,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:49,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:30:49,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:49,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:49,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:49,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:49,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:49,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:49,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:49,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:49,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:49,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:30:49,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 13:30:49,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:49,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:49,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 13:30:49,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:49,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:30:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:49,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:49,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:49,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:30:49,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:49,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:30:49,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:49,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:49,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:49,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:30:49,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-28 13:30:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:50,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:50,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:50,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:30:50,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:30:50,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:50,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:30:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 421 proven. 68 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-28 13:30:50,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713269506] [2020-10-28 13:30:50,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:50,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:50,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572605560] [2020-10-28 13:30:50,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:50,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:50,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:50,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:50,420 INFO L87 Difference]: Start difference. First operand 7593 states and 8147 transitions. Second operand 7 states. [2020-10-28 13:30:53,714 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:30:54,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:54,951 INFO L93 Difference]: Finished difference Result 16203 states and 17619 transitions. [2020-10-28 13:30:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:30:54,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 709 [2020-10-28 13:30:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:54,977 INFO L225 Difference]: With dead ends: 16203 [2020-10-28 13:30:54,977 INFO L226 Difference]: Without dead ends: 8955 [2020-10-28 13:30:54,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:30:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8955 states. [2020-10-28 13:30:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8955 to 8953. [2020-10-28 13:30:55,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8953 states. [2020-10-28 13:30:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8953 states to 8953 states and 9560 transitions. [2020-10-28 13:30:55,156 INFO L78 Accepts]: Start accepts. Automaton has 8953 states and 9560 transitions. Word has length 709 [2020-10-28 13:30:55,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:55,157 INFO L481 AbstractCegarLoop]: Abstraction has 8953 states and 9560 transitions. [2020-10-28 13:30:55,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 8953 states and 9560 transitions. [2020-10-28 13:30:55,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2020-10-28 13:30:55,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:55,170 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, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:55,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:30:55,170 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:55,171 INFO L82 PathProgramCache]: Analyzing trace with hash -12094561, now seen corresponding path program 1 times [2020-10-28 13:30:55,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:55,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442195785] [2020-10-28 13:30:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:57,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:57,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 775 [2020-10-28 13:30:57,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:30:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1921 [2020-10-28 13:30:57,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:57,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:30:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 654 [2020-10-28 13:30:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 13:30:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:57,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:57,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:57,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:57,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:57,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:57,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:30:57,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:57,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:57,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:57,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:57,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:57,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:57,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:30:57,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:30:57,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:57,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:57,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:57,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:30:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:57,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:57,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:30:57,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:57,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:30:57,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:57,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:57,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:57,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:30:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:57,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:57,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:57,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:30:57,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:57,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:30:57,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:57,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:57,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:57,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:57,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:30:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:57,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:58,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:58,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:30:58,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:58,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:30:58,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:58,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:58,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:58,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:58,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:30:58,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:30:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:58,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:58,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:58,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:30:58,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:30:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 13:30:58,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:58,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:58,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:30:58,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1195 backedges. 217 proven. 5 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2020-10-28 13:30:58,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442195785] [2020-10-28 13:30:58,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:58,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:30:58,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201033052] [2020-10-28 13:30:58,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:30:58,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:58,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:30:58,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:30:58,421 INFO L87 Difference]: Start difference. First operand 8953 states and 9560 transitions. Second operand 5 states. [2020-10-28 13:31:02,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:02,138 INFO L93 Difference]: Finished difference Result 19591 states and 20951 transitions. [2020-10-28 13:31:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:31:02,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 755 [2020-10-28 13:31:02,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:02,187 INFO L225 Difference]: With dead ends: 19591 [2020-10-28 13:31:02,187 INFO L226 Difference]: Without dead ends: 10983 [2020-10-28 13:31:02,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:31:02,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10983 states. [2020-10-28 13:31:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10983 to 10981. [2020-10-28 13:31:02,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10981 states. [2020-10-28 13:31:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10981 states to 10981 states and 11675 transitions. [2020-10-28 13:31:02,426 INFO L78 Accepts]: Start accepts. Automaton has 10981 states and 11675 transitions. Word has length 755 [2020-10-28 13:31:02,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:02,428 INFO L481 AbstractCegarLoop]: Abstraction has 10981 states and 11675 transitions. [2020-10-28 13:31:02,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:31:02,428 INFO L276 IsEmpty]: Start isEmpty. Operand 10981 states and 11675 transitions. [2020-10-28 13:31:02,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1464 [2020-10-28 13:31:02,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:02,473 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:31:02,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:31:02,473 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:02,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:02,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1487324543, now seen corresponding path program 1 times [2020-10-28 13:31:02,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:02,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230600465] [2020-10-28 13:31:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:02,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:03,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:03,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:07,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:07,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1493 [2020-10-28 13:31:07,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:31:07,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-28 13:31:07,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:07,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 843 [2020-10-28 13:31:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-28 13:31:07,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:08,115 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:31:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:08,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:31:08,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:08,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:08,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:08,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:08,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:31:08,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:31:08,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:08,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:08,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:08,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:31:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:08,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:31:08,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:31:08,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:31:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:08,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:31:08,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:31:08,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:08,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:08,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:08,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:08,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:31:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:08,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:31:08,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:31:08,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:08,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:08,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:08,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:08,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:31:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:08,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:31:08,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:31:08,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:08,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:08,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:08,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-28 13:31:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:08,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:31:08,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:31:08,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:31:08,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:08,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-28 13:31:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:08,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:31:08,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-28 13:31:08,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-28 13:31:08,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:08,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1019 [2020-10-28 13:31:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:31:08,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:31:08,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:31:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:08,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1129 [2020-10-28 13:31:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:09,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:09,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:09,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:31:09,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:31:09,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:09,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:31:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:09,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:09,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:31:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:09,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:09,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:09,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:31:09,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:09,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:31:09,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:09,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:09,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4471 backedges. 1170 proven. 294 refuted. 0 times theorem prover too weak. 3007 trivial. 0 not checked. [2020-10-28 13:31:10,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230600465] [2020-10-28 13:31:10,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:10,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:31:10,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157501248] [2020-10-28 13:31:10,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:31:10,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:10,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:31:10,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:31:10,586 INFO L87 Difference]: Start difference. First operand 10981 states and 11675 transitions. Second operand 7 states. [2020-10-28 13:31:15,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:15,432 INFO L93 Difference]: Finished difference Result 25702 states and 27395 transitions. [2020-10-28 13:31:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:31:15,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1463 [2020-10-28 13:31:15,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:15,488 INFO L225 Difference]: With dead ends: 25702 [2020-10-28 13:31:15,488 INFO L226 Difference]: Without dead ends: 15066 [2020-10-28 13:31:15,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:31:15,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15066 states. [2020-10-28 13:31:15,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15066 to 14715. [2020-10-28 13:31:15,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14715 states. [2020-10-28 13:31:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14715 states to 14715 states and 15575 transitions. [2020-10-28 13:31:15,779 INFO L78 Accepts]: Start accepts. Automaton has 14715 states and 15575 transitions. Word has length 1463 [2020-10-28 13:31:15,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:15,781 INFO L481 AbstractCegarLoop]: Abstraction has 14715 states and 15575 transitions. [2020-10-28 13:31:15,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:31:15,781 INFO L276 IsEmpty]: Start isEmpty. Operand 14715 states and 15575 transitions. [2020-10-28 13:31:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1526 [2020-10-28 13:31:15,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:15,827 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:15,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:31:15,827 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:15,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:15,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1942866555, now seen corresponding path program 1 times [2020-10-28 13:31:15,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:15,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951501865] [2020-10-28 13:31:15,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:16,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:16,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:17,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:21,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:21,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1555 [2020-10-28 13:31:21,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:31:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 13:31:21,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:21,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 843 [2020-10-28 13:31:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:31:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:21,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:21,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:21,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:21,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:21,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:21,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:31:21,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:21,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:21,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:21,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:21,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:21,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:21,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:21,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:21,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:21,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:31:21,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:31:21,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:21,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:21,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:21,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:21,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:31:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:21,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:21,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:21,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:31:21,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:21,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:31:21,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:21,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:21,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:21,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:21,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:31:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:21,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:21,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:31:21,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:21,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:31:21,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:21,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:21,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:21,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:21,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:21,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:31:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:21,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:21,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:21,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:31:21,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:31:21,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:21,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:21,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:31:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:21,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:21,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:21,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:31:21,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:21,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:31:21,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:21,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:21,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:21,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:21,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:31:21,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-28 13:31:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:22,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:22,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:22,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:31:22,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:22,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:31:22,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:22,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:31:22,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-28 13:31:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:22,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:22,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:22,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:31:22,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-28 13:31:22,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:22,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:31:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1081 [2020-10-28 13:31:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:22,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:22,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:31:22,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:22,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:31:22,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:22,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:31:22,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:22,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:22,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1191 [2020-10-28 13:31:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:22,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:23,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:23,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:31:23,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:23,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 13:31:23,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:23,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:23,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:23,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:31:23,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:23,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:23,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:31:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:23,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:23,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:23,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:31:23,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:23,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:31:23,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:23,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:23,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:23,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1229 proven. 356 refuted. 0 times theorem prover too weak. 3007 trivial. 0 not checked. [2020-10-28 13:31:24,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951501865] [2020-10-28 13:31:24,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:24,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:31:24,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767170772] [2020-10-28 13:31:24,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:31:24,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:24,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:31:24,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:31:24,846 INFO L87 Difference]: Start difference. First operand 14715 states and 15575 transitions. Second operand 7 states. [2020-10-28 13:31:29,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:29,464 INFO L93 Difference]: Finished difference Result 29091 states and 30815 transitions. [2020-10-28 13:31:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:31:29,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1525 [2020-10-28 13:31:29,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:29,512 INFO L225 Difference]: With dead ends: 29091 [2020-10-28 13:31:29,512 INFO L226 Difference]: Without dead ends: 14721 [2020-10-28 13:31:29,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:31:29,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14721 states. [2020-10-28 13:31:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14721 to 14717. [2020-10-28 13:31:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14717 states. [2020-10-28 13:31:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14717 states to 14717 states and 15577 transitions. [2020-10-28 13:31:29,800 INFO L78 Accepts]: Start accepts. Automaton has 14717 states and 15577 transitions. Word has length 1525 [2020-10-28 13:31:29,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:29,802 INFO L481 AbstractCegarLoop]: Abstraction has 14717 states and 15577 transitions. [2020-10-28 13:31:29,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:31:29,802 INFO L276 IsEmpty]: Start isEmpty. Operand 14717 states and 15577 transitions. [2020-10-28 13:31:29,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1557 [2020-10-28 13:31:29,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:29,851 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:29,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:31:29,851 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:29,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1394231273, now seen corresponding path program 1 times [2020-10-28 13:31:29,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:29,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385620775] [2020-10-28 13:31:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:30,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:30,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:35,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:35,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1586 [2020-10-28 13:31:35,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:31:35,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-28 13:31:35,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:35,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-28 13:31:35,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:31:35,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:35,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:35,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:35,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:35,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:35,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:31:35,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:35,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:35,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:35,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:35,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:35,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:31:35,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:35,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:31:35,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:35,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:35,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:35,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:35,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:35,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:31:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:35,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:35,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:31:35,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:35,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:31:35,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:35,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:35,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:35,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:31:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:35,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:35,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:31:35,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:31:35,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:35,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:35,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:31:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:35,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:35,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:35,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:31:35,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:35,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:31:35,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:35,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:35,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:35,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:31:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:35,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:36,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:36,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:31:36,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:36,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 13:31:36,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:36,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:36,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:31:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:36,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-28 13:31:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:36,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:36,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:31:36,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:31:36,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:36,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:36,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:31:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:36,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-28 13:31:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:36,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:36,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:36,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:31:36,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:31:36,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:36,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-28 13:31:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:36,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-28 13:31:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:36,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:36,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:36,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:31:36,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:36,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:31:36,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:36,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:31:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:36,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1222 [2020-10-28 13:31:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:36,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:36,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:31:36,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:36,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:31:36,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:36,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:31:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:36,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:36,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:31:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:36,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:36,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:36,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:31:36,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:36,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:31:36,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:36,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:36,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:36,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4869 backedges. 831 proven. 242 refuted. 0 times theorem prover too weak. 3796 trivial. 0 not checked. [2020-10-28 13:31:37,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385620775] [2020-10-28 13:31:37,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:37,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:31:37,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727393889] [2020-10-28 13:31:37,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:31:37,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:37,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:31:37,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:31:37,910 INFO L87 Difference]: Start difference. First operand 14717 states and 15577 transitions. Second operand 7 states. [2020-10-28 13:31:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:44,465 INFO L93 Difference]: Finished difference Result 30790 states and 32584 transitions. [2020-10-28 13:31:44,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:31:44,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1556 [2020-10-28 13:31:44,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:44,519 INFO L225 Difference]: With dead ends: 30790 [2020-10-28 13:31:44,519 INFO L226 Difference]: Without dead ends: 16418 [2020-10-28 13:31:44,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:31:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16418 states. [2020-10-28 13:31:44,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16418 to 16412. [2020-10-28 13:31:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16412 states. [2020-10-28 13:31:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16412 states to 16412 states and 17320 transitions. [2020-10-28 13:31:44,837 INFO L78 Accepts]: Start accepts. Automaton has 16412 states and 17320 transitions. Word has length 1556 [2020-10-28 13:31:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:44,838 INFO L481 AbstractCegarLoop]: Abstraction has 16412 states and 17320 transitions. [2020-10-28 13:31:44,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:31:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 16412 states and 17320 transitions. [2020-10-28 13:31:44,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1626 [2020-10-28 13:31:44,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:44,898 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:44,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:31:44,899 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:44,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:44,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1406923686, now seen corresponding path program 1 times [2020-10-28 13:31:44,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:44,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079408934] [2020-10-28 13:31:44,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:45,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:46,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:50,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:50,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1653 [2020-10-28 13:31:50,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:31:50,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5277 [2020-10-28 13:31:50,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:50,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:31:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1126 [2020-10-28 13:31:50,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 309 [2020-10-28 13:31:50,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:51,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:51,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:51,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:51,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:51,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:51,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:31:51,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:51,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:51,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:51,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:51,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:51,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:51,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:31:51,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:31:51,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:51,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:51,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:31:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:51,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:51,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:51,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:31:51,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:51,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:31:51,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:51,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:51,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:51,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:31:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:51,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:51,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:31:51,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:31:51,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:51,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:51,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:31:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:51,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:51,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:31:51,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:51,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:31:51,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:51,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:51,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:51,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:51,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:51,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:51,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:31:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:51,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:51,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:51,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:31:51,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:51,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:31:51,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:51,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:51,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:51,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:51,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:51,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:51,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-28 13:31:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:51,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:51,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:51,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:31:51,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 13:31:51,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:51,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-28 13:31:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:52,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-28 13:31:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:52,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:52,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:31:52,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:52,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-28 13:31:52,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:52,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:31:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:52,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-28 13:31:52,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:31:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:52,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:52,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:31:52,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:52,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:31:52,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:52,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:31:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 13:31:52,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:52,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1421 [2020-10-28 13:31:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:52,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:52,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:52,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:31:52,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:52,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 13:31:52,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:52,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-28 13:31:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:31:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4608 backedges. 1449 proven. 164 refuted. 0 times theorem prover too weak. 2995 trivial. 0 not checked. [2020-10-28 13:31:54,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079408934] [2020-10-28 13:31:54,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:54,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:31:54,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407817880] [2020-10-28 13:31:54,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:31:54,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:54,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:31:54,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:31:54,834 INFO L87 Difference]: Start difference. First operand 16412 states and 17320 transitions. Second operand 7 states. [2020-10-28 13:32:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:01,788 INFO L93 Difference]: Finished difference Result 36193 states and 38270 transitions. [2020-10-28 13:32:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:32:01,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1625 [2020-10-28 13:32:01,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:01,834 INFO L225 Difference]: With dead ends: 36193 [2020-10-28 13:32:01,834 INFO L226 Difference]: Without dead ends: 18755 [2020-10-28 13:32:01,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:32:01,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18755 states. [2020-10-28 13:32:02,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18755 to 16053. [2020-10-28 13:32:02,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16053 states. [2020-10-28 13:32:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16053 states to 16053 states and 16680 transitions. [2020-10-28 13:32:02,153 INFO L78 Accepts]: Start accepts. Automaton has 16053 states and 16680 transitions. Word has length 1625 [2020-10-28 13:32:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:02,155 INFO L481 AbstractCegarLoop]: Abstraction has 16053 states and 16680 transitions. [2020-10-28 13:32:02,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:32:02,155 INFO L276 IsEmpty]: Start isEmpty. Operand 16053 states and 16680 transitions. [2020-10-28 13:32:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1639 [2020-10-28 13:32:02,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:02,198 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:02,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:32:02,198 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:02,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:02,199 INFO L82 PathProgramCache]: Analyzing trace with hash 575187902, now seen corresponding path program 1 times [2020-10-28 13:32:02,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:02,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246305115] [2020-10-28 13:32:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:02,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:03,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:03,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1670 [2020-10-28 13:32:07,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:32:07,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-28 13:32:07,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-28 13:32:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 13:32:07,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:07,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:07,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:32:07,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:32:07,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:32:07,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:07,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:32:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:32:08,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:08,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:32:08,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:08,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:08,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:08,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:32:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:08,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:32:08,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:08,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:32:08,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:08,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:32:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:08,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:32:08,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:32:08,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:08,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:08,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:32:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:32:08,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:08,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:32:08,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:08,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:08,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:32:08,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-28 13:32:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:08,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:32:08,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:08,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-28 13:32:08,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:32:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-28 13:32:08,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:08,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 978 [2020-10-28 13:32:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:09,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:09,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:09,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:32:09,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:09,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:32:09,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:09,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:32:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:09,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:09,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1120 [2020-10-28 13:32:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:09,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:09,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:09,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:32:09,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:09,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:32:09,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:09,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:09,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:09,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 13:32:09,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:09,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:09,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1194 [2020-10-28 13:32:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:09,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:09,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:09,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:32:09,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:09,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:32:09,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:09,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:32:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:32:09,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1304 [2020-10-28 13:32:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:09,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:09,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:09,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:32:09,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:09,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 13:32:09,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:09,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:32:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:09,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:09,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:32:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:09,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:09,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:09,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:32:09,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:09,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:32:09,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:09,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:09,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:09,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:11,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5427 backedges. 1183 proven. 578 refuted. 0 times theorem prover too weak. 3666 trivial. 0 not checked. [2020-10-28 13:32:11,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246305115] [2020-10-28 13:32:11,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:11,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:32:11,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894157901] [2020-10-28 13:32:11,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:32:11,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:11,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:32:11,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:32:11,761 INFO L87 Difference]: Start difference. First operand 16053 states and 16680 transitions. Second operand 7 states. [2020-10-28 13:32:16,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:16,526 INFO L93 Difference]: Finished difference Result 32108 states and 33435 transitions. [2020-10-28 13:32:16,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:32:16,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1638 [2020-10-28 13:32:16,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:16,570 INFO L225 Difference]: With dead ends: 32108 [2020-10-28 13:32:16,570 INFO L226 Difference]: Without dead ends: 16741 [2020-10-28 13:32:16,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:32:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16741 states. [2020-10-28 13:32:16,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16741 to 16729. [2020-10-28 13:32:16,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16729 states. [2020-10-28 13:32:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16729 states to 16729 states and 17370 transitions. [2020-10-28 13:32:16,891 INFO L78 Accepts]: Start accepts. Automaton has 16729 states and 17370 transitions. Word has length 1638 [2020-10-28 13:32:16,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:16,892 INFO L481 AbstractCegarLoop]: Abstraction has 16729 states and 17370 transitions. [2020-10-28 13:32:16,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:32:16,893 INFO L276 IsEmpty]: Start isEmpty. Operand 16729 states and 17370 transitions. [2020-10-28 13:32:17,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1638 [2020-10-28 13:32:17,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:17,095 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:17,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:32:17,096 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:17,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:17,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1568789085, now seen corresponding path program 1 times [2020-10-28 13:32:17,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:17,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852809117] [2020-10-28 13:32:17,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:22,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:22,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1667 [2020-10-28 13:32:22,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:32:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5140 [2020-10-28 13:32:22,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:22,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 654 [2020-10-28 13:32:22,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-28 13:32:22,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:22,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:22,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:22,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:22,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:22,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:22,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:32:22,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:22,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:22,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:22,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:22,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:22,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:32:22,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:22,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:32:22,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:22,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:22,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:22,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:22,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:22,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:22,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:32:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:22,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:22,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:32:22,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:22,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:32:22,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:22,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:22,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:22,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:32:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:22,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:22,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:22,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:32:22,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:22,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:32:22,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:22,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:22,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:23,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:32:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:23,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:23,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:23,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:32:23,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:23,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:32:23,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:23,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:23,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:23,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:23,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:32:23,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:23,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:32:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:23,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:23,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:23,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-28 13:32:23,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:23,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-28 13:32:23,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:23,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:23,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:23,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:32:23,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-28 13:32:23,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:23,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 922 [2020-10-28 13:32:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:23,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:23,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:23,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:32:23,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:32:23,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:23,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-28 13:32:23,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:23,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:23,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1005 [2020-10-28 13:32:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:23,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:23,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:32:23,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:23,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:32:23,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:23,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-28 13:32:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:23,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:24,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1193 [2020-10-28 13:32:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:24,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:24,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:32:24,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:24,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:32:24,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:24,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:32:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:24,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:24,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1303 [2020-10-28 13:32:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:24,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:24,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:24,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-28 13:32:24,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:24,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:32:24,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:24,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 295 [2020-10-28 13:32:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:24,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:24,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:32:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:24,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:24,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:24,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 13:32:24,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:32:24,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:24,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:24,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0