/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/Problem18_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:01:06,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:01:06,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:01:06,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:01:06,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:01:06,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:01:06,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:01:06,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:01:06,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:01:06,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:01:06,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:01:06,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:01:06,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:01:06,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:01:06,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:01:06,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:01:06,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:01:06,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:01:06,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:01:06,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:01:06,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:01:06,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:01:06,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:01:06,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:01:06,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:01:06,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:01:06,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:01:06,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:01:06,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:01:06,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:01:06,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:01:06,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:01:06,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:01:06,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:01:06,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:01:06,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:01:06,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:01:06,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:01:06,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:01:06,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:01:06,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:01:06,440 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 14:01:06,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:01:06,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:01:06,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:01:06,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:01:06,511 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:01:06,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:01:06,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:01:06,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:01:06,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:01:06,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:01:06,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:01:06,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:01:06,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:01:06,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:01:06,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:01:06,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:01:06,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:01:06,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:01:06,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:01:06,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:01:06,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:01:06,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:01:06,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:01:06,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:01:06,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:01:06,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:01:06,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:01:06,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:01:06,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:01:06,516 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:01:06,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:01:06,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:01:06,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:01:06,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:01:06,996 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:01:06,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label58.c [2020-10-28 14:01:07,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94bdde6ea/48a7ee1b0e304338994f4db65d725604/FLAG913c5d7c3 [2020-10-28 14:01:07,916 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:01:07,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label58.c [2020-10-28 14:01:07,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94bdde6ea/48a7ee1b0e304338994f4db65d725604/FLAG913c5d7c3 [2020-10-28 14:01:08,427 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94bdde6ea/48a7ee1b0e304338994f4db65d725604 [2020-10-28 14:01:08,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:01:08,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:01:08,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:01:08,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:01:08,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:01:08,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:01:08" (1/1) ... [2020-10-28 14:01:08,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400800e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:08, skipping insertion in model container [2020-10-28 14:01:08,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:01:08" (1/1) ... [2020-10-28 14:01:08,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:01:08,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:01:09,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:01:09,624 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:01:10,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:01:10,295 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:01:10,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:10 WrapperNode [2020-10-28 14:01:10,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:01:10,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:01:10,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:01:10,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:01:10,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:10" (1/1) ... [2020-10-28 14:01:10,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:10" (1/1) ... [2020-10-28 14:01:10,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:10" (1/1) ... [2020-10-28 14:01:10,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:10" (1/1) ... [2020-10-28 14:01:10,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:10" (1/1) ... [2020-10-28 14:01:10,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:10" (1/1) ... [2020-10-28 14:01:10,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:10" (1/1) ... [2020-10-28 14:01:10,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:01:10,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:01:10,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:01:10,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:01:10,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:10" (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 14:01:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:01:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:01:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:01:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 14:01:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 14:01:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 14:01:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:01:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 14:01:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 14:01:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 14:01:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:01:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:01:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:01:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:01:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:01:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:01:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:01:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:01:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:01:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:01:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:01:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:01:10,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:01:14,708 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:01:14,708 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 14:01:14,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:01:14 BoogieIcfgContainer [2020-10-28 14:01:14,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:01:14,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:01:14,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:01:14,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:01:14,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:01:08" (1/3) ... [2020-10-28 14:01:14,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bfbdce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:01:14, skipping insertion in model container [2020-10-28 14:01:14,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:01:10" (2/3) ... [2020-10-28 14:01:14,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bfbdce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:01:14, skipping insertion in model container [2020-10-28 14:01:14,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:01:14" (3/3) ... [2020-10-28 14:01:14,720 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label58.c [2020-10-28 14:01:14,732 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:01:14,742 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:01:14,755 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:01:14,803 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:01:14,803 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:01:14,803 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:01:14,803 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:01:14,804 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:01:14,804 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:01:14,804 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:01:14,805 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:01:14,840 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 14:01:14,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 14:01:14,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:14,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:01:14,854 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:14,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:14,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1974208840, now seen corresponding path program 1 times [2020-10-28 14:01:14,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:14,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196176927] [2020-10-28 14:01:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:15,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:15,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:15,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 14:01:15,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:15,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-28 14:01:15,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:15,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:01:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:01:15,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 14:01:15,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:01:15,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:15,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:15,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:15,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:15,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:15,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:01:15,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:15,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:15,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:15,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:01:15,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:01:15,838 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 14:01:15,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196176927] [2020-10-28 14:01:15,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:01:15,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:01:15,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558354345] [2020-10-28 14:01:15,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:01:15,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:15,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:01:15,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:01:15,863 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-28 14:01:24,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:24,538 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-28 14:01:24,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:01:24,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-28 14:01:24,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:24,577 INFO L225 Difference]: With dead ends: 2275 [2020-10-28 14:01:24,578 INFO L226 Difference]: Without dead ends: 1433 [2020-10-28 14:01:24,593 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 14:01:24,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-28 14:01:24,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-28 14:01:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-28 14:01:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-28 14:01:24,759 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 47 [2020-10-28 14:01:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:24,760 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-28 14:01:24,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:01:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-28 14:01:24,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 14:01:24,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:24,769 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:01:24,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:01:24,770 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:24,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:24,771 INFO L82 PathProgramCache]: Analyzing trace with hash 918546129, now seen corresponding path program 1 times [2020-10-28 14:01:24,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:24,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830386204] [2020-10-28 14:01:24,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:24,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:25,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:25,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:25,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 14:01:25,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:01:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1108 [2020-10-28 14:01:25,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:25,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:01:25,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:01:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 14:01:25,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 14:01:26,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:26,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:26,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:26,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:26,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:26,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:01:26,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:26,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:26,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:01:26,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:01:26,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:26,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:26,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:26,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 14:01:26,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:26,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 14:01:26,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:26,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:26,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:26,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:01:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:01:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:01:26,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830386204] [2020-10-28 14:01:26,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:01:26,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:01:26,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696011997] [2020-10-28 14:01:26,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:26,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:26,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:26,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:26,341 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-28 14:01:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:37,491 INFO L93 Difference]: Finished difference Result 4357 states and 6857 transitions. [2020-10-28 14:01:37,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:01:37,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-28 14:01:37,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:37,513 INFO L225 Difference]: With dead ends: 4357 [2020-10-28 14:01:37,513 INFO L226 Difference]: Without dead ends: 2937 [2020-10-28 14:01:37,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 14:01:37,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2020-10-28 14:01:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2887. [2020-10-28 14:01:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2887 states. [2020-10-28 14:01:37,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 3988 transitions. [2020-10-28 14:01:37,612 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 3988 transitions. Word has length 117 [2020-10-28 14:01:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:37,613 INFO L481 AbstractCegarLoop]: Abstraction has 2887 states and 3988 transitions. [2020-10-28 14:01:37,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:01:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 3988 transitions. [2020-10-28 14:01:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-28 14:01:37,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:37,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:37,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:01:37,618 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:37,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:37,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1439829965, now seen corresponding path program 1 times [2020-10-28 14:01:37,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:37,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756866622] [2020-10-28 14:01:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:37,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:38,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:38,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:38,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 14:01:38,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:01:38,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1250 [2020-10-28 14:01:38,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:38,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:38,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:01:38,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:01:38,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:01:38,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:39,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:39,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:39,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:39,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:39,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:39,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:01:39,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:39,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:39,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:01:39,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:39,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:39,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:39,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:39,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 14:01:39,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:39,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 14:01:39,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:39,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:39,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:39,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:39,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 14:01:39,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:01:39,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756866622] [2020-10-28 14:01:39,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:01:39,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 14:01:39,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105466970] [2020-10-28 14:01:39,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:39,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:39,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:39,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:39,528 INFO L87 Difference]: Start difference. First operand 2887 states and 3988 transitions. Second operand 7 states. [2020-10-28 14:01:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:01:50,573 INFO L93 Difference]: Finished difference Result 8872 states and 12449 transitions. [2020-10-28 14:01:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:01:50,574 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-10-28 14:01:50,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:01:50,607 INFO L225 Difference]: With dead ends: 8872 [2020-10-28 14:01:50,608 INFO L226 Difference]: Without dead ends: 5991 [2020-10-28 14:01:50,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:01:50,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2020-10-28 14:01:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 5851. [2020-10-28 14:01:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5851 states. [2020-10-28 14:01:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 7291 transitions. [2020-10-28 14:01:50,774 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 7291 transitions. Word has length 179 [2020-10-28 14:01:50,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:01:50,775 INFO L481 AbstractCegarLoop]: Abstraction has 5851 states and 7291 transitions. [2020-10-28 14:01:50,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:01:50,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 7291 transitions. [2020-10-28 14:01:50,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-28 14:01:50,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:01:50,781 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:50,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:01:50,781 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:01:50,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:01:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash 905188576, now seen corresponding path program 1 times [2020-10-28 14:01:50,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:01:50,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739845358] [2020-10-28 14:01:50,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:01:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:50,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:52,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:53,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:53,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-28 14:01:53,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:01:53,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2917 [2020-10-28 14:01:53,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:53,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:01:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:01:53,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 14:01:53,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:01:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:53,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:53,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:53,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:01:53,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:53,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 14:01:53,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:53,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:01:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:01:53,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:01:53,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:53,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:01:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:53,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:54,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:54,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:01:54,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:54,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 14:01:54,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:54,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:01:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:01:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:01:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:01:54,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 14:01:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:01:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:01:54,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:01:54,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:01:54,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:01:54,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 14:01:54,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:01:54,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:01:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:01:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 14:01:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:01:54,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:01:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 78 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 14:01:54,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739845358] [2020-10-28 14:01:54,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:01:54,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:01:54,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639789558] [2020-10-28 14:01:54,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:01:54,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:01:54,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:01:54,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:01:54,782 INFO L87 Difference]: Start difference. First operand 5851 states and 7291 transitions. Second operand 7 states. [2020-10-28 14:02:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:03,921 INFO L93 Difference]: Finished difference Result 12491 states and 15444 transitions. [2020-10-28 14:02:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 14:02:03,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-28 14:02:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:03,954 INFO L225 Difference]: With dead ends: 12491 [2020-10-28 14:02:03,954 INFO L226 Difference]: Without dead ends: 6646 [2020-10-28 14:02:03,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:02:03,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6646 states. [2020-10-28 14:02:04,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6646 to 6589. [2020-10-28 14:02:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6589 states. [2020-10-28 14:02:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6589 states to 6589 states and 8053 transitions. [2020-10-28 14:02:04,146 INFO L78 Accepts]: Start accepts. Automaton has 6589 states and 8053 transitions. Word has length 242 [2020-10-28 14:02:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:04,148 INFO L481 AbstractCegarLoop]: Abstraction has 6589 states and 8053 transitions. [2020-10-28 14:02:04,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:02:04,148 INFO L276 IsEmpty]: Start isEmpty. Operand 6589 states and 8053 transitions. [2020-10-28 14:02:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-28 14:02:04,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:04,158 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:04,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:02:04,158 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:04,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:04,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1219702079, now seen corresponding path program 1 times [2020-10-28 14:02:04,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:04,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403682693] [2020-10-28 14:02:04,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:06,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:09,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:09,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-28 14:02:09,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:02:09,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 14:02:09,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:09,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 14:02:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 14:02:09,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:02:09,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:09,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:09,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:09,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:09,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:02:09,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:09,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:09,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:09,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:09,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:02:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:09,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:09,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:09,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 14:02:09,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:09,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 14:02:09,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:09,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:09,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 14:02:09,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:09,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 14:02:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:09,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:09,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:09,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:02:09,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-28 14:02:09,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:09,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:02:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:02:09,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:02:09,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-28 14:02:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:10,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:10,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:10,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 14:02:10,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:10,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 14:02:10,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:10,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:10,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 14:02:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:02:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 240 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 14:02:10,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403682693] [2020-10-28 14:02:10,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:02:10,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:02:10,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782384010] [2020-10-28 14:02:10,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:02:10,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:02:10,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:02:10,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:02:10,400 INFO L87 Difference]: Start difference. First operand 6589 states and 8053 transitions. Second operand 7 states. [2020-10-28 14:02:22,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:22,279 INFO L93 Difference]: Finished difference Result 15608 states and 19825 transitions. [2020-10-28 14:02:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:02:22,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 428 [2020-10-28 14:02:22,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:22,318 INFO L225 Difference]: With dead ends: 15608 [2020-10-28 14:02:22,318 INFO L226 Difference]: Without dead ends: 8178 [2020-10-28 14:02:22,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:02:22,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8178 states. [2020-10-28 14:02:22,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8178 to 8062. [2020-10-28 14:02:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8062 states. [2020-10-28 14:02:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8062 states to 8062 states and 8899 transitions. [2020-10-28 14:02:22,514 INFO L78 Accepts]: Start accepts. Automaton has 8062 states and 8899 transitions. Word has length 428 [2020-10-28 14:02:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:22,515 INFO L481 AbstractCegarLoop]: Abstraction has 8062 states and 8899 transitions. [2020-10-28 14:02:22,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:02:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 8062 states and 8899 transitions. [2020-10-28 14:02:22,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2020-10-28 14:02:22,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:22,546 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:22,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:02:22,546 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:22,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:22,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1715501084, now seen corresponding path program 1 times [2020-10-28 14:02:22,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:22,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291629758] [2020-10-28 14:02:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:23,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:27,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:27,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 911 [2020-10-28 14:02:27,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:02:27,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 14:02:27,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:27,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 535 [2020-10-28 14:02:27,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 14:02:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:27,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:27,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:27,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:27,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:27,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:27,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:02:27,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:27,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:27,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:28,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:02:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:28,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:28,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:28,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:02:28,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:28,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-28 14:02:28,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:28,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:28,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:28,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 520 [2020-10-28 14:02:28,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:28,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:02:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:28,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:28,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:28,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:02:28,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:28,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 14:02:28,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:28,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:28,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-28 14:02:28,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:28,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:02:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:29,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:29,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:02:29,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:29,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:02:29,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:29,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:29,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:02:29,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:02:29,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:02:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:29,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:29,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:29,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:02:29,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:29,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 14:02:29,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:29,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:02:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 14:02:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:29,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-28 14:02:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:29,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:29,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:29,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 14:02:29,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:02:29,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:29,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 14:02:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:29,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-28 14:02:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:29,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:29,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:29,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 14:02:29,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 14:02:29,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:29,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 14:02:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:29,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 283 proven. 189 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-28 14:02:30,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291629758] [2020-10-28 14:02:30,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:02:30,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:02:30,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930365691] [2020-10-28 14:02:30,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:02:30,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:02:30,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:02:30,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:02:30,272 INFO L87 Difference]: Start difference. First operand 8062 states and 8899 transitions. Second operand 7 states. [2020-10-28 14:02:38,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:38,949 INFO L93 Difference]: Finished difference Result 18347 states and 20264 transitions. [2020-10-28 14:02:38,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:02:38,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 889 [2020-10-28 14:02:38,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:38,989 INFO L225 Difference]: With dead ends: 18347 [2020-10-28 14:02:38,989 INFO L226 Difference]: Without dead ends: 10993 [2020-10-28 14:02:39,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:02:39,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10993 states. [2020-10-28 14:02:39,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10993 to 10937. [2020-10-28 14:02:39,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10937 states. [2020-10-28 14:02:39,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10937 states to 10937 states and 11887 transitions. [2020-10-28 14:02:39,233 INFO L78 Accepts]: Start accepts. Automaton has 10937 states and 11887 transitions. Word has length 889 [2020-10-28 14:02:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:39,234 INFO L481 AbstractCegarLoop]: Abstraction has 10937 states and 11887 transitions. [2020-10-28 14:02:39,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:02:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 10937 states and 11887 transitions. [2020-10-28 14:02:39,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2020-10-28 14:02:39,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:39,279 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:02:39,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:02:39,280 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:39,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:39,281 INFO L82 PathProgramCache]: Analyzing trace with hash 270526183, now seen corresponding path program 1 times [2020-10-28 14:02:39,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:39,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597613391] [2020-10-28 14:02:39,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:39,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:39,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:43,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:43,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 993 [2020-10-28 14:02:43,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:02:43,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4236 [2020-10-28 14:02:43,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:43,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:43,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 14:02:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 14:02:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:43,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:43,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:43,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:43,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:43,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:43,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:02:43,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:43,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:43,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:44,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:02:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:44,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:44,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:44,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:02:44,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:44,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 14:02:44,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:44,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:44,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:02:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:44,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:44,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:02:44,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:44,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 14:02:44,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:44,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:44,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:02:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:44,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:44,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:44,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:02:44,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:44,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:02:44,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:44,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:44,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:44,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:44,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:44,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:44,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:02:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:44,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:44,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:02:44,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 14:02:44,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:44,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 14:02:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:44,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:02:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:44,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:44,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:44,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:02:44,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:44,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:02:44,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:44,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:02:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:02:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:45,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:02:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:45,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:45,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:45,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 14:02:45,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 14:02:45,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:45,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:02:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 14:02:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-28 14:02:45,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597613391] [2020-10-28 14:02:45,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:02:45,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:02:45,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780643129] [2020-10-28 14:02:45,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:02:45,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:02:45,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:02:45,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:02:45,700 INFO L87 Difference]: Start difference. First operand 10937 states and 11887 transitions. Second operand 7 states. [2020-10-28 14:02:53,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:02:53,440 INFO L93 Difference]: Finished difference Result 26381 states and 29325 transitions. [2020-10-28 14:02:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:02:53,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 971 [2020-10-28 14:02:53,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:02:53,491 INFO L225 Difference]: With dead ends: 26381 [2020-10-28 14:02:53,492 INFO L226 Difference]: Without dead ends: 16152 [2020-10-28 14:02:53,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 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 14:02:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16152 states. [2020-10-28 14:02:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16152 to 16028. [2020-10-28 14:02:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16028 states. [2020-10-28 14:02:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16028 states to 16028 states and 17616 transitions. [2020-10-28 14:02:53,854 INFO L78 Accepts]: Start accepts. Automaton has 16028 states and 17616 transitions. Word has length 971 [2020-10-28 14:02:53,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:02:53,856 INFO L481 AbstractCegarLoop]: Abstraction has 16028 states and 17616 transitions. [2020-10-28 14:02:53,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:02:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 16028 states and 17616 transitions. [2020-10-28 14:02:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2020-10-28 14:02:53,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:02:53,874 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:02:53,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:02:53,874 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:02:53,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:02:53,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1679048218, now seen corresponding path program 1 times [2020-10-28 14:02:53,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:02:53,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194478855] [2020-10-28 14:02:53,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:02:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:54,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:54,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:55,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:59,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:59,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1092 [2020-10-28 14:02:59,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:02:59,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 14:02:59,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:59,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:59,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:02:59,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-28 14:02:59,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 14:02:59,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:02:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:59,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:59,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:59,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:02:59,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:59,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:02:59,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:59,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:02:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:59,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:59,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:59,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:02:59,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:59,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 14:02:59,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:59,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:59,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:02:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:59,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:59,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:59,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:02:59,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:59,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 14:02:59,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:59,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:59,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:59,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:02:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:59,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:02:59,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:02:59,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:02:59,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:02:59,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:02:59,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:02:59,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:02:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:02:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:02:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:02:59,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:02:59,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:02:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:02:59,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:00,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:00,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:03:00,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 14:03:00,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:00,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:00,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:00,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:00,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:03:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:00,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:00,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:03:00,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:00,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:03:00,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:00,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:00,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:00,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:03:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:00,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:00,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:00,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 14:03:00,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:00,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 14:03:00,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:00,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:03:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 14:03:00,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:00,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-28 14:03:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:00,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:00,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:00,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 14:03:00,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 14:03:00,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:00,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:03:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:03:00,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 14:03:00,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-28 14:03:01,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194478855] [2020-10-28 14:03:01,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:03:01,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 14:03:01,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730765103] [2020-10-28 14:03:01,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 14:03:01,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:03:01,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 14:03:01,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:03:01,342 INFO L87 Difference]: Start difference. First operand 16028 states and 17616 transitions. Second operand 8 states. [2020-10-28 14:03:15,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:03:15,080 INFO L93 Difference]: Finished difference Result 38587 states and 43740 transitions. [2020-10-28 14:03:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:03:15,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1068 [2020-10-28 14:03:15,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:03:15,151 INFO L225 Difference]: With dead ends: 38587 [2020-10-28 14:03:15,151 INFO L226 Difference]: Without dead ends: 23267 [2020-10-28 14:03:15,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:03:15,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23267 states. [2020-10-28 14:03:15,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23267 to 22514. [2020-10-28 14:03:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22514 states. [2020-10-28 14:03:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22514 states to 22514 states and 24618 transitions. [2020-10-28 14:03:15,622 INFO L78 Accepts]: Start accepts. Automaton has 22514 states and 24618 transitions. Word has length 1068 [2020-10-28 14:03:15,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:03:15,624 INFO L481 AbstractCegarLoop]: Abstraction has 22514 states and 24618 transitions. [2020-10-28 14:03:15,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 14:03:15,625 INFO L276 IsEmpty]: Start isEmpty. Operand 22514 states and 24618 transitions. [2020-10-28 14:03:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1136 [2020-10-28 14:03:15,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:03:15,644 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:03:15,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:03:15,644 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:03:15,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:03:15,645 INFO L82 PathProgramCache]: Analyzing trace with hash 315833286, now seen corresponding path program 1 times [2020-10-28 14:03:15,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:03:15,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207925053] [2020-10-28 14:03:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:03:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:16,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:17,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:17,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1159 [2020-10-28 14:03:17,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:17,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1475 [2020-10-28 14:03:17,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:17,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:03:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-28 14:03:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 14:03:17,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:17,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:03:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:17,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:17,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:03:17,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 14:03:17,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:17,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:17,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:17,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:03:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:17,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:17,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:17,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:03:17,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:17,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 14:03:17,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:17,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:17,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:17,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:17,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:17,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:18,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:03:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:18,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:18,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:18,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:03:18,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:18,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 14:03:18,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:18,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:18,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:18,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:18,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:18,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:18,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:03:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:18,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:18,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:18,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:03:18,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:18,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:03:18,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:18,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:18,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:18,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:18,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:03:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:18,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:18,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:03:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 14:03:18,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:18,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:18,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:03:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:18,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:18,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:18,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:03:18,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:18,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:03:18,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:18,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:18,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:03:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:18,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:18,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:18,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 14:03:18,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:18,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 14:03:18,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:18,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:18,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:18,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:18,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:18,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:18,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 14:03:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:18,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:18,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:18,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 14:03:18,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 14:03:18,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:18,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:03:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 14:03:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-10-28 14:03:19,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207925053] [2020-10-28 14:03:19,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:03:19,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 14:03:19,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607840333] [2020-10-28 14:03:19,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:03:19,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:03:19,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:03:19,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:03:19,504 INFO L87 Difference]: Start difference. First operand 22514 states and 24618 transitions. Second operand 5 states. [2020-10-28 14:03:27,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:03:27,438 INFO L93 Difference]: Finished difference Result 52906 states and 59054 transitions. [2020-10-28 14:03:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:03:27,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1135 [2020-10-28 14:03:27,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:03:27,525 INFO L225 Difference]: With dead ends: 52906 [2020-10-28 14:03:27,525 INFO L226 Difference]: Without dead ends: 31100 [2020-10-28 14:03:27,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:03:27,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31100 states. [2020-10-28 14:03:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31100 to 31100. [2020-10-28 14:03:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31100 states. [2020-10-28 14:03:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31100 states to 31100 states and 34125 transitions. [2020-10-28 14:03:28,190 INFO L78 Accepts]: Start accepts. Automaton has 31100 states and 34125 transitions. Word has length 1135 [2020-10-28 14:03:28,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:03:28,191 INFO L481 AbstractCegarLoop]: Abstraction has 31100 states and 34125 transitions. [2020-10-28 14:03:28,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:03:28,191 INFO L276 IsEmpty]: Start isEmpty. Operand 31100 states and 34125 transitions. [2020-10-28 14:03:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2020-10-28 14:03:28,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:03:28,213 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:03:28,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:03:28,213 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:03:28,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:03:28,214 INFO L82 PathProgramCache]: Analyzing trace with hash -326569826, now seen corresponding path program 1 times [2020-10-28 14:03:28,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:03:28,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165818355] [2020-10-28 14:03:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:03:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:28,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:31,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:33,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:33,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1186 [2020-10-28 14:03:33,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:03:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 14:03:33,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:33,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:03:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 976 [2020-10-28 14:03:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 14:03:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:33,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:03:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:33,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:33,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:33,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:03:33,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:33,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:03:33,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:33,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:33,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:33,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:03:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:33,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:33,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:03:33,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:33,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 14:03:33,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:33,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:33,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:03:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:33,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:33,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:03:33,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:33,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 14:03:33,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:33,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:33,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:33,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:33,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:33,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:34,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:03:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:34,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:34,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:03:34,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:34,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:03:34,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:34,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:34,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:34,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:03:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:34,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:34,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:34,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:03:34,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:34,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 14:03:34,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:34,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:34,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:34,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:03:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:34,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:34,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:03:34,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:34,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:03:34,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:34,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:34,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:34,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:34,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:34,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:34,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:03:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:34,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:34,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:34,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:03:34,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 14:03:34,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:34,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:03:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 14:03:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:34,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-28 14:03:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:34,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:34,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:34,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:34,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 14:03:34,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:03:34,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-28 14:03:34,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:34,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:03:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:03:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 14:03:34,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1147 backedges. 554 proven. 41 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2020-10-28 14:03:35,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165818355] [2020-10-28 14:03:35,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:03:35,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 14:03:35,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802131425] [2020-10-28 14:03:35,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:03:35,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:03:35,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:03:35,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:03:35,432 INFO L87 Difference]: Start difference. First operand 31100 states and 34125 transitions. Second operand 6 states. [2020-10-28 14:03:43,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:03:43,616 INFO L93 Difference]: Finished difference Result 74293 states and 83340 transitions. [2020-10-28 14:03:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 14:03:43,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1162 [2020-10-28 14:03:43,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:03:43,733 INFO L225 Difference]: With dead ends: 74293 [2020-10-28 14:03:43,733 INFO L226 Difference]: Without dead ends: 43901 [2020-10-28 14:03:43,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:03:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43901 states. [2020-10-28 14:03:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43901 to 43844. [2020-10-28 14:03:44,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43844 states. [2020-10-28 14:03:44,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43844 states to 43844 states and 48277 transitions. [2020-10-28 14:03:44,583 INFO L78 Accepts]: Start accepts. Automaton has 43844 states and 48277 transitions. Word has length 1162 [2020-10-28 14:03:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:03:44,585 INFO L481 AbstractCegarLoop]: Abstraction has 43844 states and 48277 transitions. [2020-10-28 14:03:44,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:03:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 43844 states and 48277 transitions. [2020-10-28 14:03:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1227 [2020-10-28 14:03:44,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:03:44,611 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:44,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 14:03:44,612 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:03:44,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:03:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash -648574690, now seen corresponding path program 1 times [2020-10-28 14:03:44,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:03:44,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664264137] [2020-10-28 14:03:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:03:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:44,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:45,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:49,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:49,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1250 [2020-10-28 14:03:49,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:03:49,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-28 14:03:49,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:49,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:03:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 976 [2020-10-28 14:03:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-28 14:03:49,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:03:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:50,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:03:50,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:03:50,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:03:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:50,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:03:50,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:50,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 14:03:50,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:50,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:50,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:03:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:50,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:03:50,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:50,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 14:03:50,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:50,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:03:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:03:50,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:50,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:03:50,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:03:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:50,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:03:50,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 14:03:50,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:03:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:03:50,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:03:50,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:03:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:03:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:03:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:50,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:50,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:03:50,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:50,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 14:03:50,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:50,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:50,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:03:50,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:03:50,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 14:03:50,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:50,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-28 14:03:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:03:51,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:03:51,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:03:51,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 14:03:51,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:03:51,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-28 14:03:51,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:03:51,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:03:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:03:51,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:03:51,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-28 14:03:51,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:03:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 725 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2020-10-28 14:03:52,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664264137] [2020-10-28 14:03:52,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:03:52,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:03:52,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553725434] [2020-10-28 14:03:52,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:03:52,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:03:52,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:03:52,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:03:52,410 INFO L87 Difference]: Start difference. First operand 43844 states and 48277 transitions. Second operand 7 states. [2020-10-28 14:04:01,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:04:01,907 INFO L93 Difference]: Finished difference Result 87053 states and 95992 transitions. [2020-10-28 14:04:01,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:04:01,908 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1226 [2020-10-28 14:04:01,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:04:02,016 INFO L225 Difference]: With dead ends: 87053 [2020-10-28 14:04:02,016 INFO L226 Difference]: Without dead ends: 43917 [2020-10-28 14:04:02,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:04:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43917 states. [2020-10-28 14:04:02,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43917 to 43857. [2020-10-28 14:04:02,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43857 states. [2020-10-28 14:04:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43857 states to 43857 states and 48221 transitions. [2020-10-28 14:04:03,094 INFO L78 Accepts]: Start accepts. Automaton has 43857 states and 48221 transitions. Word has length 1226 [2020-10-28 14:04:03,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:04:03,095 INFO L481 AbstractCegarLoop]: Abstraction has 43857 states and 48221 transitions. [2020-10-28 14:04:03,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:04:03,095 INFO L276 IsEmpty]: Start isEmpty. Operand 43857 states and 48221 transitions. [2020-10-28 14:04:03,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1265 [2020-10-28 14:04:03,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:04:03,122 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:03,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 14:04:03,122 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:04:03,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:04:03,123 INFO L82 PathProgramCache]: Analyzing trace with hash 920745805, now seen corresponding path program 1 times [2020-10-28 14:04:03,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:04:03,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323593031] [2020-10-28 14:04:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:04:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:03,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:03,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:05,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:05,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:08,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:08,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1290 [2020-10-28 14:04:08,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 14:04:08,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-28 14:04:08,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:08,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:08,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:04:08,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1102 [2020-10-28 14:04:08,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 14:04:08,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:08,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:04:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:08,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:08,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:08,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:04:08,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:04:08,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:08,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:08,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:04:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:08,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:08,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:08,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:04:08,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:08,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 14:04:08,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:08,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:08,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:04:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:08,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:08,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:04:08,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 14:04:08,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:08,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:08,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:08,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:04:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:08,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:08,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:08,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:04:08,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:08,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:04:08,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:08,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:08,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:08,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:08,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:08,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:09,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:04:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:09,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:09,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:09,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:04:09,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 14:04:09,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:09,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:09,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:09,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:04:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:09,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:09,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:09,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:04:09,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:09,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:04:09,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:09,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:09,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:09,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:09,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:09,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:09,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:04:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:09,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:09,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 14:04:09,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 14:04:09,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:09,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:09,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:09,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:09,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-28 14:04:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:09,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:09,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:09,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 14:04:09,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 14:04:09,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:09,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:04:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:09,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 14:04:09,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:09,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1088 [2020-10-28 14:04:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:09,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:09,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:09,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 14:04:09,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:09,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 14:04:09,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:09,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:04:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:04:09,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:04:09,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:10,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1636 backedges. 718 proven. 2 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2020-10-28 14:04:10,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323593031] [2020-10-28 14:04:10,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:04:10,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:04:10,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473489015] [2020-10-28 14:04:10,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:04:10,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:04:10,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:04:10,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:04:10,560 INFO L87 Difference]: Start difference. First operand 43857 states and 48221 transitions. Second operand 7 states. [2020-10-28 14:04:21,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:04:21,194 INFO L93 Difference]: Finished difference Result 97013 states and 107933 transitions. [2020-10-28 14:04:21,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:04:21,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1264 [2020-10-28 14:04:21,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:04:21,298 INFO L225 Difference]: With dead ends: 97013 [2020-10-28 14:04:21,298 INFO L226 Difference]: Without dead ends: 53864 [2020-10-28 14:04:21,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 14:04:21,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53864 states. [2020-10-28 14:04:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53864 to 53787. [2020-10-28 14:04:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53787 states. [2020-10-28 14:04:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53787 states to 53787 states and 58824 transitions. [2020-10-28 14:04:22,323 INFO L78 Accepts]: Start accepts. Automaton has 53787 states and 58824 transitions. Word has length 1264 [2020-10-28 14:04:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:04:22,324 INFO L481 AbstractCegarLoop]: Abstraction has 53787 states and 58824 transitions. [2020-10-28 14:04:22,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:04:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 53787 states and 58824 transitions. [2020-10-28 14:04:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1295 [2020-10-28 14:04:22,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:04:22,351 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:22,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 14:04:22,352 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:04:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:04:22,352 INFO L82 PathProgramCache]: Analyzing trace with hash -2138101240, now seen corresponding path program 1 times [2020-10-28 14:04:22,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:04:22,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219344124] [2020-10-28 14:04:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:04:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:22,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:24,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:24,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1318 [2020-10-28 14:04:24,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1631 [2020-10-28 14:04:24,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:24,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:04:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1269 [2020-10-28 14:04:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 14:04:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:24,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:04:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:24,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:24,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:04:24,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:24,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:04:24,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:24,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:24,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:24,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:24,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:24,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:24,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:04:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:24,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:24,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:04:24,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:24,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 14:04:24,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:24,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:24,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:04:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:24,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:24,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:04:24,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:24,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 14:04:24,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:24,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:24,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:24,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:24,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:04:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:24,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:24,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:24,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:04:24,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:24,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:04:24,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:24,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:24,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:24,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:25,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:04:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:25,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:25,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:25,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:04:25,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:25,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 14:04:25,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:25,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:25,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:25,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:25,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:25,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:25,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:04:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:25,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:25,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:25,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:04:25,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:25,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:04:25,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:25,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:25,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:25,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:25,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:04:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:25,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:25,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 14:04:25,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:25,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:04:25,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:25,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:25,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:25,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:25,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 14:04:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:25,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:25,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-28 14:04:25,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:25,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 14:04:25,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:25,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:25,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:04:25,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:25,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 14:04:25,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 161 proven. 4 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2020-10-28 14:04:26,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219344124] [2020-10-28 14:04:26,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:04:26,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 14:04:26,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919952499] [2020-10-28 14:04:26,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:04:26,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:04:26,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:04:26,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:04:26,363 INFO L87 Difference]: Start difference. First operand 53787 states and 58824 transitions. Second operand 5 states. [2020-10-28 14:04:34,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:04:34,698 INFO L93 Difference]: Finished difference Result 114628 states and 125899 transitions. [2020-10-28 14:04:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:04:34,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1294 [2020-10-28 14:04:34,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:04:34,809 INFO L225 Difference]: With dead ends: 114628 [2020-10-28 14:04:34,809 INFO L226 Difference]: Without dead ends: 61549 [2020-10-28 14:04:34,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:04:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61549 states. [2020-10-28 14:04:35,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61549 to 61529. [2020-10-28 14:04:35,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61529 states. [2020-10-28 14:04:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61529 states to 61529 states and 66949 transitions. [2020-10-28 14:04:35,872 INFO L78 Accepts]: Start accepts. Automaton has 61529 states and 66949 transitions. Word has length 1294 [2020-10-28 14:04:35,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:04:35,873 INFO L481 AbstractCegarLoop]: Abstraction has 61529 states and 66949 transitions. [2020-10-28 14:04:35,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:04:35,873 INFO L276 IsEmpty]: Start isEmpty. Operand 61529 states and 66949 transitions. [2020-10-28 14:04:35,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1323 [2020-10-28 14:04:35,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:04:35,902 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:04:35,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 14:04:35,902 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:04:35,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:04:35,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1333858748, now seen corresponding path program 1 times [2020-10-28 14:04:35,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:04:35,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975958159] [2020-10-28 14:04:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:04:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:36,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:36,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:37,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:41,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:41,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1350 [2020-10-28 14:04:41,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:04:41,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 14:04:41,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:41,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:41,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:04:41,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1162 [2020-10-28 14:04:41,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 14:04:41,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:41,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:04:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:41,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:41,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:41,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:04:41,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:41,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:04:41,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:41,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:41,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:41,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:41,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 14:04:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:41,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:41,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:41,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 14:04:41,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:41,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 14:04:41,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:41,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:41,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:41,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:04:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:41,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:41,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 14:04:41,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:41,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 14:04:41,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:41,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:41,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:42,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 14:04:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:42,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:42,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:42,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 14:04:42,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:42,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:04:42,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:42,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:42,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 14:04:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:42,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:42,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:42,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 14:04:42,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:42,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 14:04:42,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:42,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:42,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:42,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 14:04:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:42,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:42,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:42,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:04:42,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:42,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:04:42,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:42,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:42,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:42,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:42,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:42,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:42,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 14:04:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:42,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:42,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:42,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 14:04:42,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 14:04:42,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:42,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:42,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 14:04:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:42,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:42,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:42,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 14:04:42,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:42,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:04:42,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:42,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:04:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:04:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-28 14:04:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:42,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:42,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:04:42,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:42,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 14:04:42,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:42,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:04:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:04:42,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 14:04:42,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:04:42,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1146 [2020-10-28 14:04:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:04:42,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:04:42,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:04:42,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 14:04:42,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:04:42,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 14:04:42,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:04:42,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:04:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:04:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:04:42,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 14:04:42,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0