/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:11:00,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:11:00,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:11:00,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:11:00,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:11:00,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:11:00,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:11:00,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:11:00,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:11:00,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:11:00,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:11:00,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:11:00,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:11:00,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:11:00,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:11:00,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:11:00,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:11:00,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:11:00,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:11:00,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:11:00,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:11:01,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:11:01,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:11:01,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:11:01,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:11:01,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:11:01,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:11:01,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:11:01,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:11:01,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:11:01,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:11:01,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:11:01,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:11:01,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:11:01,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:11:01,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:11:01,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:11:01,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:11:01,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:11:01,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:11:01,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:11:01,021 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 13:11:01,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:11:01,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:11:01,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:11:01,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:11:01,069 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:11:01,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:11:01,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:11:01,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:11:01,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:11:01,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:11:01,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:11:01,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:11:01,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:11:01,073 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:11:01,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:11:01,074 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:11:01,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:11:01,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:11:01,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:11:01,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:11:01,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:11:01,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:11:01,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:11:01,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:11:01,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:11:01,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:11:01,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:11:01,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:11:01,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:11:01,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:11:01,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:11:01,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:11:01,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:11:01,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:11:01,603 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:11:01,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46.c [2020-10-28 13:11:01,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa33e70c3/caeec0e582db497c81d36b1ee39299f5/FLAG980e234ef [2020-10-28 13:11:02,596 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:11:02,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label46.c [2020-10-28 13:11:02,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa33e70c3/caeec0e582db497c81d36b1ee39299f5/FLAG980e234ef [2020-10-28 13:11:02,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa33e70c3/caeec0e582db497c81d36b1ee39299f5 [2020-10-28 13:11:02,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:11:02,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:11:02,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:11:02,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:11:02,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:11:02,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:11:02" (1/1) ... [2020-10-28 13:11:02,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749ee816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:02, skipping insertion in model container [2020-10-28 13:11:02,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:11:02" (1/1) ... [2020-10-28 13:11:02,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:11:02,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:11:03,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:11:03,706 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:11:04,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:11:04,071 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:11:04,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:04 WrapperNode [2020-10-28 13:11:04,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:11:04,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:11:04,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:11:04,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:11:04,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:04" (1/1) ... [2020-10-28 13:11:04,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:04" (1/1) ... [2020-10-28 13:11:04,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:04" (1/1) ... [2020-10-28 13:11:04,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:04" (1/1) ... [2020-10-28 13:11:04,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:04" (1/1) ... [2020-10-28 13:11:04,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:04" (1/1) ... [2020-10-28 13:11:04,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:04" (1/1) ... [2020-10-28 13:11:04,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:11:04,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:11:04,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:11:04,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:11:04,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:04" (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 13:11:04,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:11:04,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:11:04,434 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:11:04,435 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:11:04,435 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:11:04,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:11:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:11:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:11:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:11:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:11:04,439 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:11:04,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:11:04,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:11:04,439 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:11:04,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:11:04,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:11:04,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:11:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:11:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:11:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:11:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:11:08,058 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:11:08,059 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:11:08,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:11:08 BoogieIcfgContainer [2020-10-28 13:11:08,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:11:08,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:11:08,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:11:08,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:11:08,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:11:02" (1/3) ... [2020-10-28 13:11:08,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec29cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:11:08, skipping insertion in model container [2020-10-28 13:11:08,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:11:04" (2/3) ... [2020-10-28 13:11:08,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ec29cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:11:08, skipping insertion in model container [2020-10-28 13:11:08,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:11:08" (3/3) ... [2020-10-28 13:11:08,079 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label46.c [2020-10-28 13:11:08,100 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:11:08,107 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:11:08,123 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:11:08,181 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:11:08,181 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:11:08,181 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:11:08,181 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:11:08,182 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:11:08,182 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:11:08,182 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:11:08,182 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:11:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:11:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 13:11:08,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:08,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:11:08,242 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:08,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:08,252 INFO L82 PathProgramCache]: Analyzing trace with hash 440131193, now seen corresponding path program 1 times [2020-10-28 13:11:08,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:08,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316932188] [2020-10-28 13:11:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:08,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:09,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:09,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 13:11:09,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:09,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-28 13:11:09,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:09,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:11:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 13:11:09,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:11:09,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:09,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:09,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:09,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:09,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:09,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:11:09,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:09,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:09,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:09,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:11:09,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:09,566 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 13:11:09,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316932188] [2020-10-28 13:11:09,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:11:09,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:11:09,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980986627] [2020-10-28 13:11:09,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:11:09,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:09,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:11:09,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:11:09,609 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:11:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:16,008 INFO L93 Difference]: Finished difference Result 1203 states and 2168 transitions. [2020-10-28 13:11:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:11:16,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 13:11:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:16,034 INFO L225 Difference]: With dead ends: 1203 [2020-10-28 13:11:16,034 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:11:16,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:11:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:11:16,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 689. [2020-10-28 13:11:16,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-28 13:11:16,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1009 transitions. [2020-10-28 13:11:16,195 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1009 transitions. Word has length 50 [2020-10-28 13:11:16,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:16,195 INFO L481 AbstractCegarLoop]: Abstraction has 689 states and 1009 transitions. [2020-10-28 13:11:16,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:11:16,196 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1009 transitions. [2020-10-28 13:11:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 13:11:16,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:16,205 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:16,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:11:16,210 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:16,211 INFO L82 PathProgramCache]: Analyzing trace with hash -568552754, now seen corresponding path program 1 times [2020-10-28 13:11:16,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:16,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601339684] [2020-10-28 13:11:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:16,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:18,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:18,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 13:11:18,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:11:18,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2195 [2020-10-28 13:11:18,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:18,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:11:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:11:18,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:11:18,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:18,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:18,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:18,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:18,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:11:18,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:18,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:18,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:11:18,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:18,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:11:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:18,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:18,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:11:18,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:18,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-28 13:11:18,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:18,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:11:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:11:18,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:11:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:19,038 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:11:19,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601339684] [2020-10-28 13:11:19,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:11:19,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:11:19,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491030957] [2020-10-28 13:11:19,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:11:19,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:19,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:11:19,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:11:19,050 INFO L87 Difference]: Start difference. First operand 689 states and 1009 transitions. Second operand 7 states. [2020-10-28 13:11:20,025 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 13:11:30,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:30,008 INFO L93 Difference]: Finished difference Result 1706 states and 2409 transitions. [2020-10-28 13:11:30,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:11:30,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-28 13:11:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:30,025 INFO L225 Difference]: With dead ends: 1706 [2020-10-28 13:11:30,026 INFO L226 Difference]: Without dead ends: 1023 [2020-10-28 13:11:30,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:11:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-10-28 13:11:30,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1010. [2020-10-28 13:11:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-10-28 13:11:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1361 transitions. [2020-10-28 13:11:30,123 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1361 transitions. Word has length 119 [2020-10-28 13:11:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:30,126 INFO L481 AbstractCegarLoop]: Abstraction has 1010 states and 1361 transitions. [2020-10-28 13:11:30,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:11:30,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1361 transitions. [2020-10-28 13:11:30,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 13:11:30,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:30,138 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:30,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:11:30,138 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:30,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:30,139 INFO L82 PathProgramCache]: Analyzing trace with hash 577578762, now seen corresponding path program 1 times [2020-10-28 13:11:30,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:30,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329043525] [2020-10-28 13:11:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:30,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:30,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:30,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:31,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:31,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:11:31,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:11:31,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1245 [2020-10-28 13:11:31,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:31,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:31,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:31,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:11:31,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:11:31,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:31,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:31,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:31,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:31,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:31,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:31,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:11:31,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:31,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:31,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:31,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:31,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:11:31,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:11:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:31,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:31,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:11:31,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:31,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 13:11:31,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:31,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:31,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:11:31,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:11:31,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:11:31,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:11:31,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329043525] [2020-10-28 13:11:31,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:11:31,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:11:31,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977264415] [2020-10-28 13:11:31,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:11:31,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:31,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:11:31,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:11:31,898 INFO L87 Difference]: Start difference. First operand 1010 states and 1361 transitions. Second operand 7 states. [2020-10-28 13:11:43,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:43,026 INFO L93 Difference]: Finished difference Result 2077 states and 3011 transitions. [2020-10-28 13:11:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:11:43,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-28 13:11:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:43,036 INFO L225 Difference]: With dead ends: 2077 [2020-10-28 13:11:43,036 INFO L226 Difference]: Without dead ends: 1380 [2020-10-28 13:11:43,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:11:43,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-10-28 13:11:43,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1341. [2020-10-28 13:11:43,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-10-28 13:11:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1735 transitions. [2020-10-28 13:11:43,091 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1735 transitions. Word has length 124 [2020-10-28 13:11:43,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:43,093 INFO L481 AbstractCegarLoop]: Abstraction has 1341 states and 1735 transitions. [2020-10-28 13:11:43,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:11:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1735 transitions. [2020-10-28 13:11:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 13:11:43,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:43,103 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:11:43,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:11:43,104 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:43,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:43,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1334894784, now seen corresponding path program 1 times [2020-10-28 13:11:43,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:43,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487418630] [2020-10-28 13:11:43,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:43,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:44,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:45,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:48,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:48,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:11:48,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:11:48,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 13:11:48,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:48,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:11:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:11:48,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 13:11:48,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:48,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:11:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:48,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:48,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:48,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:11:48,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:48,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:11:48,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:48,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:11:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:48,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:11:48,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:48,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:11:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:48,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:48,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:48,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:11:48,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:11:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:11:48,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:48,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:11:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:11:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:11:48,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:11:48,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:11:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:48,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:48,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:11:48,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:11:48,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:11:48,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 13:11:48,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:11:48,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:11:48,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:11:48,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:11:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:11:48,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:11:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 116 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:11:48,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487418630] [2020-10-28 13:11:48,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:11:48,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:11:48,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429894559] [2020-10-28 13:11:48,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:11:48,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:11:48,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:11:48,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:11:48,898 INFO L87 Difference]: Start difference. First operand 1341 states and 1735 transitions. Second operand 7 states. [2020-10-28 13:12:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:03,048 INFO L93 Difference]: Finished difference Result 2789 states and 3856 transitions. [2020-10-28 13:12:03,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:12:03,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-28 13:12:03,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:03,064 INFO L225 Difference]: With dead ends: 2789 [2020-10-28 13:12:03,064 INFO L226 Difference]: Without dead ends: 2072 [2020-10-28 13:12:03,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 13:12:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2020-10-28 13:12:03,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2006. [2020-10-28 13:12:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2006 states. [2020-10-28 13:12:03,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2493 transitions. [2020-10-28 13:12:03,165 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2493 transitions. Word has length 224 [2020-10-28 13:12:03,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:03,167 INFO L481 AbstractCegarLoop]: Abstraction has 2006 states and 2493 transitions. [2020-10-28 13:12:03,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:03,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2493 transitions. [2020-10-28 13:12:03,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-28 13:12:03,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:03,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:12:03,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:12:03,175 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:03,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:03,175 INFO L82 PathProgramCache]: Analyzing trace with hash 2049096531, now seen corresponding path program 1 times [2020-10-28 13:12:03,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:03,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437065275] [2020-10-28 13:12:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:03,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:04,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:05,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:07,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:07,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:07,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:08,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:08,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-28 13:12:08,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 13:12:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 13:12:08,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:08,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:12:08,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:12:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:08,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:08,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:08,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:08,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:08,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:12:08,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:08,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:08,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:08,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:08,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:08,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:12:08,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:08,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:12:08,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:08,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:12:08,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:08,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:12:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:08,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:08,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:08,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:12:08,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:08,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-28 13:12:08,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:08,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:08,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:12:08,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:12:09,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437065275] [2020-10-28 13:12:09,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:09,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:12:09,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143052835] [2020-10-28 13:12:09,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:09,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:09,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:09,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:09,029 INFO L87 Difference]: Start difference. First operand 2006 states and 2493 transitions. Second operand 7 states. [2020-10-28 13:12:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:20,207 INFO L93 Difference]: Finished difference Result 4715 states and 6127 transitions. [2020-10-28 13:12:20,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:12:20,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-28 13:12:20,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:20,233 INFO L225 Difference]: With dead ends: 4715 [2020-10-28 13:12:20,233 INFO L226 Difference]: Without dead ends: 2671 [2020-10-28 13:12:20,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:12:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2020-10-28 13:12:20,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 2610. [2020-10-28 13:12:20,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2610 states. [2020-10-28 13:12:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 2981 transitions. [2020-10-28 13:12:20,348 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 2981 transitions. Word has length 268 [2020-10-28 13:12:20,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:20,349 INFO L481 AbstractCegarLoop]: Abstraction has 2610 states and 2981 transitions. [2020-10-28 13:12:20,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:20,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 2981 transitions. [2020-10-28 13:12:20,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-28 13:12:20,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:20,356 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:12:20,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:12:20,356 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:20,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:20,357 INFO L82 PathProgramCache]: Analyzing trace with hash 755147633, now seen corresponding path program 1 times [2020-10-28 13:12:20,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:20,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559030057] [2020-10-28 13:12:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:20,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:25,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:25,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-28 13:12:25,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:12:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4784 [2020-10-28 13:12:25,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:25,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:12:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:12:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:12:25,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:25,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:25,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:25,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:25,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:25,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:12:25,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:25,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:12:25,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:25,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:25,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:25,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:25,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:12:25,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:25,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-28 13:12:25,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:25,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:25,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:25,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:25,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:12:25,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:12:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:26,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:26,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:12:26,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:12:26,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:26,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 13:12:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:26,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 84 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:12:27,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559030057] [2020-10-28 13:12:27,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:27,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:12:27,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878046025] [2020-10-28 13:12:27,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:27,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:27,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:27,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:27,028 INFO L87 Difference]: Start difference. First operand 2610 states and 2981 transitions. Second operand 7 states. [2020-10-28 13:12:33,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:33,820 INFO L93 Difference]: Finished difference Result 4954 states and 5706 transitions. [2020-10-28 13:12:33,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:12:33,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-10-28 13:12:33,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:33,836 INFO L225 Difference]: With dead ends: 4954 [2020-10-28 13:12:33,836 INFO L226 Difference]: Without dead ends: 2657 [2020-10-28 13:12:33,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:12:33,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2020-10-28 13:12:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2612. [2020-10-28 13:12:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2612 states. [2020-10-28 13:12:33,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 2981 transitions. [2020-10-28 13:12:33,918 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 2981 transitions. Word has length 335 [2020-10-28 13:12:33,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:33,919 INFO L481 AbstractCegarLoop]: Abstraction has 2612 states and 2981 transitions. [2020-10-28 13:12:33,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:33,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 2981 transitions. [2020-10-28 13:12:33,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-28 13:12:33,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:33,928 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:12:33,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:12:33,928 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:33,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1700607238, now seen corresponding path program 1 times [2020-10-28 13:12:33,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:33,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75157160] [2020-10-28 13:12:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:34,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:36,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:36,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-28 13:12:36,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:12:36,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2086 [2020-10-28 13:12:36,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:36,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:36,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:36,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:12:36,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 13:12:36,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:36,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:36,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:36,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:36,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:36,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:12:36,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:36,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:36,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:36,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:36,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:36,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:36,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:12:36,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:36,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 13:12:36,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:36,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:36,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:12:36,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:36,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:12:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:37,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:37,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:12:37,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:37,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 13:12:37,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:37,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:37,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:12:37,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:37,290 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 13:12:37,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75157160] [2020-10-28 13:12:37,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:37,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:12:37,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110125167] [2020-10-28 13:12:37,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:37,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:37,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:37,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:37,292 INFO L87 Difference]: Start difference. First operand 2612 states and 2981 transitions. Second operand 7 states. [2020-10-28 13:12:48,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:12:48,469 INFO L93 Difference]: Finished difference Result 6253 states and 7382 transitions. [2020-10-28 13:12:48,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:12:48,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 409 [2020-10-28 13:12:48,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:12:48,493 INFO L225 Difference]: With dead ends: 6253 [2020-10-28 13:12:48,493 INFO L226 Difference]: Without dead ends: 3954 [2020-10-28 13:12:48,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:12:48,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2020-10-28 13:12:48,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3889. [2020-10-28 13:12:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3889 states. [2020-10-28 13:12:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3889 states to 3889 states and 4427 transitions. [2020-10-28 13:12:48,603 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 4427 transitions. Word has length 409 [2020-10-28 13:12:48,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:12:48,603 INFO L481 AbstractCegarLoop]: Abstraction has 3889 states and 4427 transitions. [2020-10-28 13:12:48,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:12:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 4427 transitions. [2020-10-28 13:12:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-28 13:12:48,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:12:48,613 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:12:48,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:12:48,613 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:12:48,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:12:48,614 INFO L82 PathProgramCache]: Analyzing trace with hash 725329656, now seen corresponding path program 1 times [2020-10-28 13:12:48,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:12:48,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96433423] [2020-10-28 13:12:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:12:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:48,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:48,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:51,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:51,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-28 13:12:51,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:12:51,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2974 [2020-10-28 13:12:51,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:51,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:12:51,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:12:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:51,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:12:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:51,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:51,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:51,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:12:51,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:51,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:12:51,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:51,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:12:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:12:51,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:51,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:12:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:52,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:52,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:52,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:12:52,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:52,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 13:12:52,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:52,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:52,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:12:52,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:12:52,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:12:52,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:12:52,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:12:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:12:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:12:52,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:12:52,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:12:52,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:12:52,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:12:52,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:12:52,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:12:52,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:12:52,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:12:52,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:12:52,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:12:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:12:52,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96433423] [2020-10-28 13:12:52,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:12:52,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:12:52,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80849011] [2020-10-28 13:12:52,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:12:52,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:12:52,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:12:52,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:12:52,989 INFO L87 Difference]: Start difference. First operand 3889 states and 4427 transitions. Second operand 7 states. [2020-10-28 13:13:01,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:01,721 INFO L93 Difference]: Finished difference Result 8167 states and 9322 transitions. [2020-10-28 13:13:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:13:01,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 435 [2020-10-28 13:13:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:01,742 INFO L225 Difference]: With dead ends: 8167 [2020-10-28 13:13:01,742 INFO L226 Difference]: Without dead ends: 4591 [2020-10-28 13:13:01,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:13:01,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4591 states. [2020-10-28 13:13:01,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4591 to 4525. [2020-10-28 13:13:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4525 states. [2020-10-28 13:13:01,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4525 states to 4525 states and 5083 transitions. [2020-10-28 13:13:01,867 INFO L78 Accepts]: Start accepts. Automaton has 4525 states and 5083 transitions. Word has length 435 [2020-10-28 13:13:01,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:01,868 INFO L481 AbstractCegarLoop]: Abstraction has 4525 states and 5083 transitions. [2020-10-28 13:13:01,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:13:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 4525 states and 5083 transitions. [2020-10-28 13:13:01,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-28 13:13:01,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:01,879 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:13:01,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:13:01,880 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:01,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:01,881 INFO L82 PathProgramCache]: Analyzing trace with hash 295065200, now seen corresponding path program 1 times [2020-10-28 13:13:01,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:01,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12143767] [2020-10-28 13:13:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:02,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:02,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-28 13:13:02,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-28 13:13:02,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:02,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:13:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 13:13:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:02,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:02,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:02,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:02,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:02,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:02,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:13:02,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:02,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:02,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:02,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:02,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:13:02,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:02,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:13:02,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:02,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:02,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:13:03,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:13:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:03,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:03,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:03,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:13:03,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:03,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:13:03,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:03,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:13:03,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:13:03,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12143767] [2020-10-28 13:13:03,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:03,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:13:03,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513198823] [2020-10-28 13:13:03,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:13:03,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:03,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:13:03,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:13:03,388 INFO L87 Difference]: Start difference. First operand 4525 states and 5083 transitions. Second operand 5 states. [2020-10-28 13:13:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:12,909 INFO L93 Difference]: Finished difference Result 9780 states and 11300 transitions. [2020-10-28 13:13:12,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:13:12,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 447 [2020-10-28 13:13:12,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:12,940 INFO L225 Difference]: With dead ends: 9780 [2020-10-28 13:13:12,941 INFO L226 Difference]: Without dead ends: 6501 [2020-10-28 13:13:12,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:13:12,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2020-10-28 13:13:13,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 6480. [2020-10-28 13:13:13,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6480 states. [2020-10-28 13:13:13,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6480 states to 6480 states and 7431 transitions. [2020-10-28 13:13:13,115 INFO L78 Accepts]: Start accepts. Automaton has 6480 states and 7431 transitions. Word has length 447 [2020-10-28 13:13:13,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:13,117 INFO L481 AbstractCegarLoop]: Abstraction has 6480 states and 7431 transitions. [2020-10-28 13:13:13,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:13:13,117 INFO L276 IsEmpty]: Start isEmpty. Operand 6480 states and 7431 transitions. [2020-10-28 13:13:13,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-10-28 13:13:13,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:13,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:13:13,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:13:13,123 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:13,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:13,124 INFO L82 PathProgramCache]: Analyzing trace with hash 461835893, now seen corresponding path program 1 times [2020-10-28 13:13:13,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:13,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098525134] [2020-10-28 13:13:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:13,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:13,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:18,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:18,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 501 [2020-10-28 13:13:18,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:13:18,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 13:13:18,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:18,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:13:18,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 13:13:18,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:18,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:18,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:18,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:18,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:18,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:18,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:18,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:13:18,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:18,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:18,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:18,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:18,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:18,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:18,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:18,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:18,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:18,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:13:18,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 13:13:18,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:18,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:13:18,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:13:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:19,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:19,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:19,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:13:19,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:19,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 13:13:19,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:19,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:19,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:13:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:13:20,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098525134] [2020-10-28 13:13:20,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:20,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:13:20,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529676854] [2020-10-28 13:13:20,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:13:20,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:20,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:13:20,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:13:20,055 INFO L87 Difference]: Start difference. First operand 6480 states and 7431 transitions. Second operand 8 states. [2020-10-28 13:13:23,798 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 13:13:34,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:34,947 INFO L93 Difference]: Finished difference Result 14322 states and 16991 transitions. [2020-10-28 13:13:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 13:13:34,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 487 [2020-10-28 13:13:34,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:34,998 INFO L225 Difference]: With dead ends: 14322 [2020-10-28 13:13:34,998 INFO L226 Difference]: Without dead ends: 8765 [2020-10-28 13:13:35,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-28 13:13:35,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8765 states. [2020-10-28 13:13:35,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8765 to 8718. [2020-10-28 13:13:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8718 states. [2020-10-28 13:13:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8718 states to 8718 states and 9979 transitions. [2020-10-28 13:13:35,229 INFO L78 Accepts]: Start accepts. Automaton has 8718 states and 9979 transitions. Word has length 487 [2020-10-28 13:13:35,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:35,230 INFO L481 AbstractCegarLoop]: Abstraction has 8718 states and 9979 transitions. [2020-10-28 13:13:35,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:13:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 8718 states and 9979 transitions. [2020-10-28 13:13:35,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-28 13:13:35,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:35,238 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:35,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:13:35,238 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:35,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:35,239 INFO L82 PathProgramCache]: Analyzing trace with hash -174807384, now seen corresponding path program 1 times [2020-10-28 13:13:35,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:35,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923258719] [2020-10-28 13:13:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:36,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:38,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:38,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 536 [2020-10-28 13:13:38,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:13:38,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2651 [2020-10-28 13:13:38,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:38,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:38,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:38,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:13:38,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:13:38,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:38,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:38,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:38,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:38,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:38,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:38,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:13:38,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:38,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:38,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:38,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:38,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:38,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:38,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:38,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:13:38,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:38,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 13:13:38,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:38,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:38,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:38,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:38,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:38,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:13:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:38,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:38,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:13:38,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:38,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:13:38,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:38,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:38,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:38,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:13:38,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:38,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:13:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:38,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:38,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:38,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:13:38,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:38,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:13:38,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:38,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:13:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:13:38,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:13:38,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923258719] [2020-10-28 13:13:38,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:38,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:13:38,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147454202] [2020-10-28 13:13:38,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:13:38,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:38,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:13:38,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:13:38,992 INFO L87 Difference]: Start difference. First operand 8718 states and 9979 transitions. Second operand 7 states. [2020-10-28 13:13:49,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:13:49,679 INFO L93 Difference]: Finished difference Result 19716 states and 23176 transitions. [2020-10-28 13:13:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:13:49,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 520 [2020-10-28 13:13:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:13:49,721 INFO L225 Difference]: With dead ends: 19716 [2020-10-28 13:13:49,721 INFO L226 Difference]: Without dead ends: 11311 [2020-10-28 13:13:49,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 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 13:13:49,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11311 states. [2020-10-28 13:13:49,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11311 to 11257. [2020-10-28 13:13:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11257 states. [2020-10-28 13:13:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11257 states to 11257 states and 12783 transitions. [2020-10-28 13:13:50,008 INFO L78 Accepts]: Start accepts. Automaton has 11257 states and 12783 transitions. Word has length 520 [2020-10-28 13:13:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:13:50,009 INFO L481 AbstractCegarLoop]: Abstraction has 11257 states and 12783 transitions. [2020-10-28 13:13:50,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:13:50,010 INFO L276 IsEmpty]: Start isEmpty. Operand 11257 states and 12783 transitions. [2020-10-28 13:13:50,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-28 13:13:50,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:13:50,020 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:13:50,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:13:50,020 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:13:50,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:13:50,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1950968005, now seen corresponding path program 1 times [2020-10-28 13:13:50,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:13:50,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700124122] [2020-10-28 13:13:50,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:13:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:50,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:50,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:55,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:55,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 599 [2020-10-28 13:13:55,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:13:55,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4810 [2020-10-28 13:13:55,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:55,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:13:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 547 [2020-10-28 13:13:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 13:13:55,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:55,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:13:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:55,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:55,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:13:55,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:55,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:13:55,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:55,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:55,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:55,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:55,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:55,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:55,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:13:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:55,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:55,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:55,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:13:55,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:55,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:13:55,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:55,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:55,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:55,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:13:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:55,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:55,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:13:55,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:55,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:13:55,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:55,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:13:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:13:55,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:55,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:13:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:13:55,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:13:55,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:13:55,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 13:13:55,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:13:55,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:13:55,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:13:55,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:13:55,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:13:55,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:13:55,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 13:13:55,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:13:55,894 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2020-10-28 13:13:55,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700124122] [2020-10-28 13:13:55,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:13:55,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:13:55,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647859865] [2020-10-28 13:13:55,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:13:55,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:13:55,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:13:55,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:13:55,896 INFO L87 Difference]: Start difference. First operand 11257 states and 12783 transitions. Second operand 5 states. [2020-10-28 13:14:04,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:04,701 INFO L93 Difference]: Finished difference Result 23156 states and 26516 transitions. [2020-10-28 13:14:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:14:04,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 583 [2020-10-28 13:14:04,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:04,748 INFO L225 Difference]: With dead ends: 23156 [2020-10-28 13:14:04,748 INFO L226 Difference]: Without dead ends: 13455 [2020-10-28 13:14:04,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:14:04,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13455 states. [2020-10-28 13:14:05,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13455 to 13125. [2020-10-28 13:14:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13125 states. [2020-10-28 13:14:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13125 states to 13125 states and 14762 transitions. [2020-10-28 13:14:05,052 INFO L78 Accepts]: Start accepts. Automaton has 13125 states and 14762 transitions. Word has length 583 [2020-10-28 13:14:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:05,053 INFO L481 AbstractCegarLoop]: Abstraction has 13125 states and 14762 transitions. [2020-10-28 13:14:05,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:14:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand 13125 states and 14762 transitions. [2020-10-28 13:14:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2020-10-28 13:14:05,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:05,064 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:14:05,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:14:05,064 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:05,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:05,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1667125488, now seen corresponding path program 1 times [2020-10-28 13:14:05,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:05,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228013132] [2020-10-28 13:14:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:05,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:09,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:09,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 617 [2020-10-28 13:14:09,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:14:09,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3786 [2020-10-28 13:14:09,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:09,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:14:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:14:09,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:09,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:09,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:09,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:09,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:14:09,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:09,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:09,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:09,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:09,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:09,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:09,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:14:09,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:09,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:09,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:09,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:09,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:09,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:09,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:09,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:09,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:09,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:09,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:09,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:14:09,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:09,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:09,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:09,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:14:09,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:09,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:14:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:09,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:09,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:09,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 13:14:09,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:09,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 13:14:09,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:09,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:09,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:09,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:09,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-28 13:14:09,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:14:10,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228013132] [2020-10-28 13:14:10,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:10,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:14:10,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920622392] [2020-10-28 13:14:10,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:14:10,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:10,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:14:10,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:14:10,017 INFO L87 Difference]: Start difference. First operand 13125 states and 14762 transitions. Second operand 7 states. [2020-10-28 13:14:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:21,670 INFO L93 Difference]: Finished difference Result 28435 states and 32746 transitions. [2020-10-28 13:14:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:14:21,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 601 [2020-10-28 13:14:21,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:21,796 INFO L225 Difference]: With dead ends: 28435 [2020-10-28 13:14:21,796 INFO L226 Difference]: Without dead ends: 16866 [2020-10-28 13:14:21,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 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 13:14:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16866 states. [2020-10-28 13:14:22,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16866 to 15295. [2020-10-28 13:14:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15295 states. [2020-10-28 13:14:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15295 states to 15295 states and 17520 transitions. [2020-10-28 13:14:22,245 INFO L78 Accepts]: Start accepts. Automaton has 15295 states and 17520 transitions. Word has length 601 [2020-10-28 13:14:22,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:22,246 INFO L481 AbstractCegarLoop]: Abstraction has 15295 states and 17520 transitions. [2020-10-28 13:14:22,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:14:22,246 INFO L276 IsEmpty]: Start isEmpty. Operand 15295 states and 17520 transitions. [2020-10-28 13:14:22,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2020-10-28 13:14:22,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:22,260 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:14:22,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:14:22,260 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:22,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:22,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1728854541, now seen corresponding path program 1 times [2020-10-28 13:14:22,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:22,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040891338] [2020-10-28 13:14:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:22,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:22,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:23,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:26,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:27,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:27,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 628 [2020-10-28 13:14:27,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:14:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 13:14:27,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:27,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:14:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:14:27,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-28 13:14:27,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:27,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:27,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:27,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:27,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:27,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:14:27,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:27,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:27,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:27,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:27,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:27,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:27,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:27,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:27,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:27,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:14:27,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:27,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:27,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:27,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:27,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:27,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:28,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:28,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:14:28,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:14:28,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:28,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:14:28,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:28,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:14:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:28,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:28,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:28,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:14:28,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 13:14:28,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:28,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:28,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:14:28,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 356 proven. 43 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 13:14:28,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040891338] [2020-10-28 13:14:28,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:14:28,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:14:28,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957835352] [2020-10-28 13:14:28,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:14:28,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:14:28,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:14:28,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:14:28,554 INFO L87 Difference]: Start difference. First operand 15295 states and 17520 transitions. Second operand 6 states. [2020-10-28 13:14:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:14:37,761 INFO L93 Difference]: Finished difference Result 35256 states and 41250 transitions. [2020-10-28 13:14:37,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:14:37,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 612 [2020-10-28 13:14:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:14:37,835 INFO L225 Difference]: With dead ends: 35256 [2020-10-28 13:14:37,835 INFO L226 Difference]: Without dead ends: 20895 [2020-10-28 13:14:37,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:14:37,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20895 states. [2020-10-28 13:14:38,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20895 to 19954. [2020-10-28 13:14:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19954 states. [2020-10-28 13:14:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19954 states to 19954 states and 22650 transitions. [2020-10-28 13:14:38,341 INFO L78 Accepts]: Start accepts. Automaton has 19954 states and 22650 transitions. Word has length 612 [2020-10-28 13:14:38,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:14:38,342 INFO L481 AbstractCegarLoop]: Abstraction has 19954 states and 22650 transitions. [2020-10-28 13:14:38,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:14:38,342 INFO L276 IsEmpty]: Start isEmpty. Operand 19954 states and 22650 transitions. [2020-10-28 13:14:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2020-10-28 13:14:38,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:14:38,358 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:14:38,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:14:38,359 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:14:38,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:14:38,360 INFO L82 PathProgramCache]: Analyzing trace with hash -236932833, now seen corresponding path program 1 times [2020-10-28 13:14:38,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:14:38,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55988617] [2020-10-28 13:14:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:14:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:40,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:41,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:42,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:43,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:43,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 718 [2020-10-28 13:14:43,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:14:43,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:14:43,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:43,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:14:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-28 13:14:43,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 13:14:43,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:43,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:14:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:43,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:43,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:43,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:14:43,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:43,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:14:43,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:43,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:43,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:43,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:43,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:43,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:43,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:14:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:43,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:43,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:43,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:14:43,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:43,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:14:43,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:43,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:43,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:43,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:43,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:43,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:43,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:14:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:43,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:44,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:44,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:14:44,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 13:14:44,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:44,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:14:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:14:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:14:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:44,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:44,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:14:44,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:14:44,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:44,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:14:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:14:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:14:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:14:44,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-28 13:14:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:14:44,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:14:44,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:14:44,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:14:44,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:14:44,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:14:44,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:14:44,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:14:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:14:44,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:14:44,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 13:14:44,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0