/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/systemc/toy1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:40:48,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:40:48,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:40:48,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:40:48,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:40:48,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:40:48,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:40:48,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:40:48,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:40:48,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:40:48,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:40:48,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:40:48,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:40:48,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:40:48,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:40:48,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:40:48,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:40:48,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:40:48,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:40:48,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:40:48,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:40:48,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:40:48,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:40:48,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:40:48,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:40:48,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:40:48,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:40:48,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:40:48,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:40:48,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:40:48,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:40:48,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:40:48,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:40:48,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:40:48,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:40:48,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:40:48,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:40:48,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:40:48,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:40:48,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:40:48,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:40:48,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 06:40:48,436 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:40:48,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:40:48,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:40:48,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:40:48,441 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:40:48,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:40:48,442 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:40:48,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:40:48,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:40:48,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:40:48,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:40:48,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:40:48,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:40:48,444 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:40:48,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:40:48,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:40:48,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:40:48,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:40:48,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:40:48,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:40:48,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:40:48,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:40:48,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:40:48,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:40:48,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:40:48,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:40:48,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:40:48,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:40:48,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:40:48,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:40:48,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:40:48,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:40:48,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:40:48,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:40:48,917 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:40:48,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy1.cil.c [2020-10-27 06:40:48,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83814e69b/f1b1a4cb2753440baa989f2d14833c55/FLAG14711eeb2 [2020-10-27 06:40:49,707 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:40:49,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy1.cil.c [2020-10-27 06:40:49,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83814e69b/f1b1a4cb2753440baa989f2d14833c55/FLAG14711eeb2 [2020-10-27 06:40:50,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83814e69b/f1b1a4cb2753440baa989f2d14833c55 [2020-10-27 06:40:50,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:40:50,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:40:50,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:40:50,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:40:50,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:40:50,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ad8976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50, skipping insertion in model container [2020-10-27 06:40:50,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,084 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:40:50,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:40:50,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:40:50,377 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:40:50,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:40:50,463 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:40:50,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50 WrapperNode [2020-10-27 06:40:50,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:40:50,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:40:50,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:40:50,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:40:50,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... [2020-10-27 06:40:50,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:40:50,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:40:50,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:40:50,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:40:50,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:40:50,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:40:50,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:40:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:40:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-27 06:40:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-27 06:40:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-27 06:40:50,652 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-27 06:40:50,653 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-27 06:40:50,653 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-27 06:40:50,653 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-27 06:40:50,653 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-27 06:40:50,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:40:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:40:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:40:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:40:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:40:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 06:40:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-27 06:40:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-27 06:40:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-27 06:40:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-27 06:40:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-27 06:40:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:40:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-27 06:40:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-27 06:40:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:40:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:40:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:40:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:40:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:40:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:40:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:40:51,632 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:40:51,632 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-27 06:40:51,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:40:51 BoogieIcfgContainer [2020-10-27 06:40:51,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:40:51,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:40:51,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:40:51,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:40:51,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:40:50" (1/3) ... [2020-10-27 06:40:51,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36764b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:40:51, skipping insertion in model container [2020-10-27 06:40:51,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:40:50" (2/3) ... [2020-10-27 06:40:51,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36764b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:40:51, skipping insertion in model container [2020-10-27 06:40:51,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:40:51" (3/3) ... [2020-10-27 06:40:51,645 INFO L111 eAbstractionObserver]: Analyzing ICFG toy1.cil.c [2020-10-27 06:40:51,656 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:40:51,661 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:40:51,674 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:40:51,704 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:40:51,704 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:40:51,704 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:40:51,704 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:40:51,705 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:40:51,705 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:40:51,705 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:40:51,705 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:40:51,728 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-10-27 06:40:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 06:40:51,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:40:51,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:40:51,741 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:40:51,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:40:51,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1781835089, now seen corresponding path program 1 times [2020-10-27 06:40:51,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:40:51,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735081941] [2020-10-27 06:40:51,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:40:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:40:52,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:52,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:53,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:53,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:53,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:54,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:55,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:57,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:40:57,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 06:40:57,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 06:40:57,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 06:40:57,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:40:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 06:40:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:40:57,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 06:40:57,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:40:57,290 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:40:57,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:40:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:40:57,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:40:57,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:40:57,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:40:57,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:40:57,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 06:40:57,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:40:57,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:40:57,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:40:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:40:57,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:40:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:40:57,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735081941] [2020-10-27 06:40:57,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:40:57,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:40:57,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078979737] [2020-10-27 06:40:57,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 06:40:57,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:40:57,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 06:40:57,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:40:57,560 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 6 states. [2020-10-27 06:40:57,779 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 06:40:58,353 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-27 06:40:59,061 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:00,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:00,025 INFO L93 Difference]: Finished difference Result 603 states and 1047 transitions. [2020-10-27 06:41:00,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 06:41:00,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-10-27 06:41:00,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:00,047 INFO L225 Difference]: With dead ends: 603 [2020-10-27 06:41:00,048 INFO L226 Difference]: Without dead ends: 454 [2020-10-27 06:41:00,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 06:41:00,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-27 06:41:00,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 275. [2020-10-27 06:41:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-27 06:41:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 448 transitions. [2020-10-27 06:41:00,210 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 448 transitions. Word has length 48 [2020-10-27 06:41:00,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:00,213 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 448 transitions. [2020-10-27 06:41:00,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 06:41:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 448 transitions. [2020-10-27 06:41:00,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 06:41:00,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:00,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:41:00,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:41:00,225 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:00,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:00,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1783471672, now seen corresponding path program 1 times [2020-10-27 06:41:00,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:00,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178527713] [2020-10-27 06:41:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:00,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:00,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:00,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:01,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:03,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:03,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 06:41:03,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 06:41:03,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2859 [2020-10-27 06:41:03,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:03,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 06:41:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:03,365 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:03,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:03,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:03,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:03,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:03,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:03,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:41:03,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:03,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:03,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:41:03,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178527713] [2020-10-27 06:41:03,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:03,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:41:03,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071337474] [2020-10-27 06:41:03,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:41:03,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:03,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:41:03,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:41:03,397 INFO L87 Difference]: Start difference. First operand 275 states and 448 transitions. Second operand 4 states. [2020-10-27 06:41:03,579 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:04,335 INFO L93 Difference]: Finished difference Result 563 states and 915 transitions. [2020-10-27 06:41:04,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:41:04,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-27 06:41:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:04,339 INFO L225 Difference]: With dead ends: 563 [2020-10-27 06:41:04,339 INFO L226 Difference]: Without dead ends: 307 [2020-10-27 06:41:04,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:04,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-27 06:41:04,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 275. [2020-10-27 06:41:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-27 06:41:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 439 transitions. [2020-10-27 06:41:04,391 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 439 transitions. Word has length 48 [2020-10-27 06:41:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:04,392 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 439 transitions. [2020-10-27 06:41:04,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:41:04,392 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 439 transitions. [2020-10-27 06:41:04,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 06:41:04,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:04,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:41:04,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:41:04,394 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:04,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:04,398 INFO L82 PathProgramCache]: Analyzing trace with hash -21966662, now seen corresponding path program 1 times [2020-10-27 06:41:04,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:04,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225226567] [2020-10-27 06:41:04,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:04,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:04,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:04,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:04,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:04,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:04,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:04,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:05,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:05,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:07,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:07,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 06:41:07,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 06:41:07,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2732 [2020-10-27 06:41:07,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:07,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:07,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:07,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 06:41:07,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:07,390 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:07,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:07,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:07,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:07,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:07,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:07,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:41:07,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:07,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:07,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:07,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:07,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:41:07,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225226567] [2020-10-27 06:41:07,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:07,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:41:07,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572672732] [2020-10-27 06:41:07,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:41:07,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:07,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:41:07,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:41:07,422 INFO L87 Difference]: Start difference. First operand 275 states and 439 transitions. Second operand 4 states. [2020-10-27 06:41:07,585 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:08,628 INFO L93 Difference]: Finished difference Result 856 states and 1367 transitions. [2020-10-27 06:41:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:41:08,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-27 06:41:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:08,633 INFO L225 Difference]: With dead ends: 856 [2020-10-27 06:41:08,634 INFO L226 Difference]: Without dead ends: 601 [2020-10-27 06:41:08,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:08,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-27 06:41:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 531. [2020-10-27 06:41:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-10-27 06:41:08,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 848 transitions. [2020-10-27 06:41:08,704 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 848 transitions. Word has length 48 [2020-10-27 06:41:08,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:08,704 INFO L481 AbstractCegarLoop]: Abstraction has 531 states and 848 transitions. [2020-10-27 06:41:08,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:41:08,705 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 848 transitions. [2020-10-27 06:41:08,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 06:41:08,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:08,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:41:08,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:41:08,707 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:08,708 INFO L82 PathProgramCache]: Analyzing trace with hash -272028744, now seen corresponding path program 1 times [2020-10-27 06:41:08,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:08,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902532442] [2020-10-27 06:41:08,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:08,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:08,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:08,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:08,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:09,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:09,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:10,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:10,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 06:41:10,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:41:10,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-10-27 06:41:10,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:10,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 06:41:10,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:10,905 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:10,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:10,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:10,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:10,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:10,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:41:10,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:41:10,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902532442] [2020-10-27 06:41:10,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:10,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:41:10,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144335007] [2020-10-27 06:41:10,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:41:10,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:10,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:41:10,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:41:10,932 INFO L87 Difference]: Start difference. First operand 531 states and 848 transitions. Second operand 4 states. [2020-10-27 06:41:11,091 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:12,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:12,308 INFO L93 Difference]: Finished difference Result 1614 states and 2578 transitions. [2020-10-27 06:41:12,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:41:12,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-27 06:41:12,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:12,318 INFO L225 Difference]: With dead ends: 1614 [2020-10-27 06:41:12,318 INFO L226 Difference]: Without dead ends: 1115 [2020-10-27 06:41:12,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:12,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2020-10-27 06:41:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1017. [2020-10-27 06:41:12,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2020-10-27 06:41:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1626 transitions. [2020-10-27 06:41:12,421 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1626 transitions. Word has length 48 [2020-10-27 06:41:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:12,421 INFO L481 AbstractCegarLoop]: Abstraction has 1017 states and 1626 transitions. [2020-10-27 06:41:12,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:41:12,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1626 transitions. [2020-10-27 06:41:12,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 06:41:12,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:12,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:41:12,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:41:12,424 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:12,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:12,424 INFO L82 PathProgramCache]: Analyzing trace with hash -724047921, now seen corresponding path program 1 times [2020-10-27 06:41:12,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:12,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674996412] [2020-10-27 06:41:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:12,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:12,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:12,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:12,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:14,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:14,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 06:41:14,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:41:14,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2043 [2020-10-27 06:41:14,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 06:41:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 06:41:14,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:14,659 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:14,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:14,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:14,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:14,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:14,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:14,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:41:14,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:14,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:14,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:14,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:14,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:41:14,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674996412] [2020-10-27 06:41:14,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:14,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:41:14,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741367667] [2020-10-27 06:41:14,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:41:14,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:14,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:41:14,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:41:14,689 INFO L87 Difference]: Start difference. First operand 1017 states and 1626 transitions. Second operand 4 states. [2020-10-27 06:41:14,868 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:15,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:15,990 INFO L93 Difference]: Finished difference Result 2531 states and 4047 transitions. [2020-10-27 06:41:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:41:15,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-27 06:41:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:16,003 INFO L225 Difference]: With dead ends: 2531 [2020-10-27 06:41:16,004 INFO L226 Difference]: Without dead ends: 1548 [2020-10-27 06:41:16,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:16,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2020-10-27 06:41:16,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1399. [2020-10-27 06:41:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1399 states. [2020-10-27 06:41:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 2224 transitions. [2020-10-27 06:41:16,158 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 2224 transitions. Word has length 48 [2020-10-27 06:41:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:16,159 INFO L481 AbstractCegarLoop]: Abstraction has 1399 states and 2224 transitions. [2020-10-27 06:41:16,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:41:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 2224 transitions. [2020-10-27 06:41:16,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 06:41:16,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:16,161 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:16,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:41:16,162 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:16,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1217391087, now seen corresponding path program 1 times [2020-10-27 06:41:16,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:16,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201520621] [2020-10-27 06:41:16,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:16,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:16,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:16,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:17,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:17,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:21,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:21,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 06:41:21,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:41:21,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 06:41:21,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:21,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 06:41:21,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:21,412 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:21,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:21,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:21,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:21,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:21,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:21,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:41:21,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:21,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:21,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:21,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:21,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:21,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:21,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:21,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:21,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:41:21,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:21,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:21,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201520621] [2020-10-27 06:41:21,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:21,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:21,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966450882] [2020-10-27 06:41:21,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:21,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:21,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:21,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:21,527 INFO L87 Difference]: Start difference. First operand 1399 states and 2224 transitions. Second operand 5 states. [2020-10-27 06:41:21,780 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:22,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:22,859 INFO L93 Difference]: Finished difference Result 3187 states and 5102 transitions. [2020-10-27 06:41:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:41:22,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-27 06:41:22,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:22,873 INFO L225 Difference]: With dead ends: 3187 [2020-10-27 06:41:22,873 INFO L226 Difference]: Without dead ends: 1814 [2020-10-27 06:41:22,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:22,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2020-10-27 06:41:23,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1463. [2020-10-27 06:41:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-10-27 06:41:23,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2290 transitions. [2020-10-27 06:41:23,056 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2290 transitions. Word has length 62 [2020-10-27 06:41:23,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:23,056 INFO L481 AbstractCegarLoop]: Abstraction has 1463 states and 2290 transitions. [2020-10-27 06:41:23,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:23,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2290 transitions. [2020-10-27 06:41:23,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 06:41:23,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:23,059 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:23,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:41:23,060 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:23,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:23,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1570479469, now seen corresponding path program 1 times [2020-10-27 06:41:23,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:23,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889468452] [2020-10-27 06:41:23,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:23,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:23,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:23,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:23,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:23,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:23,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:26,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:26,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:28,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:28,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 06:41:28,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:41:28,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 06:41:28,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:41:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:28,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 06:41:28,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:28,284 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:28,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:28,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:28,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:28,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:28,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:28,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:41:28,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:28,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:28,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:28,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:28,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:28,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:28,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:28,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:28,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:28,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:28,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:41:28,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:28,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:28,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:28,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889468452] [2020-10-27 06:41:28,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:28,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:28,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824578397] [2020-10-27 06:41:28,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:28,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:28,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:28,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:28,372 INFO L87 Difference]: Start difference. First operand 1463 states and 2290 transitions. Second operand 5 states. [2020-10-27 06:41:28,623 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:29,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:29,755 INFO L93 Difference]: Finished difference Result 3255 states and 5134 transitions. [2020-10-27 06:41:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:41:29,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-27 06:41:29,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:29,769 INFO L225 Difference]: With dead ends: 3255 [2020-10-27 06:41:29,769 INFO L226 Difference]: Without dead ends: 1814 [2020-10-27 06:41:29,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2020-10-27 06:41:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1463. [2020-10-27 06:41:29,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-10-27 06:41:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2288 transitions. [2020-10-27 06:41:29,964 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2288 transitions. Word has length 62 [2020-10-27 06:41:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:29,965 INFO L481 AbstractCegarLoop]: Abstraction has 1463 states and 2288 transitions. [2020-10-27 06:41:29,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2288 transitions. [2020-10-27 06:41:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 06:41:29,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:29,967 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:29,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:41:29,968 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:29,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:29,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1585998187, now seen corresponding path program 1 times [2020-10-27 06:41:29,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:29,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690771622] [2020-10-27 06:41:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:29,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:30,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:30,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:30,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:30,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:31,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:34,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:34,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 06:41:34,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:41:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 06:41:34,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 06:41:34,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:35,163 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:35,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:35,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:35,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:35,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:35,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 06:41:35,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:35,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:35,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:35,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:35,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:35,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:35,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:35,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:35,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:35,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:35,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:41:35,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:35,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:35,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:35,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:35,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:35,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690771622] [2020-10-27 06:41:35,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:35,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:35,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230182452] [2020-10-27 06:41:35,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:35,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:35,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:35,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:35,239 INFO L87 Difference]: Start difference. First operand 1463 states and 2288 transitions. Second operand 5 states. [2020-10-27 06:41:35,403 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:36,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:36,474 INFO L93 Difference]: Finished difference Result 3253 states and 5128 transitions. [2020-10-27 06:41:36,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:41:36,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-27 06:41:36,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:36,487 INFO L225 Difference]: With dead ends: 3253 [2020-10-27 06:41:36,487 INFO L226 Difference]: Without dead ends: 1814 [2020-10-27 06:41:36,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:36,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2020-10-27 06:41:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1463. [2020-10-27 06:41:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-10-27 06:41:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2232 transitions. [2020-10-27 06:41:36,654 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2232 transitions. Word has length 62 [2020-10-27 06:41:36,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:36,657 INFO L481 AbstractCegarLoop]: Abstraction has 1463 states and 2232 transitions. [2020-10-27 06:41:36,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2232 transitions. [2020-10-27 06:41:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 06:41:36,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:36,659 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:36,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:41:36,660 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:36,660 INFO L82 PathProgramCache]: Analyzing trace with hash -41202927, now seen corresponding path program 1 times [2020-10-27 06:41:36,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:36,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740708250] [2020-10-27 06:41:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:36,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:36,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:36,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:37,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:39,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:39,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 06:41:39,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:41:39,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3009 [2020-10-27 06:41:39,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:39,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:41:39,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 06:41:39,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 06:41:39,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:39,896 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:39,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:39,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:39,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 06:41:39,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:39,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:39,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:39,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:39,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:39,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:41:39,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:41:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:41:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:41:40,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740708250] [2020-10-27 06:41:40,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:40,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 06:41:40,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917603997] [2020-10-27 06:41:40,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 06:41:40,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:40,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 06:41:40,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:41:40,005 INFO L87 Difference]: Start difference. First operand 1463 states and 2232 transitions. Second operand 6 states. [2020-10-27 06:41:40,174 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 06:41:42,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:42,209 INFO L93 Difference]: Finished difference Result 4768 states and 7753 transitions. [2020-10-27 06:41:42,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 06:41:42,210 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-27 06:41:42,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:42,232 INFO L225 Difference]: With dead ends: 4768 [2020-10-27 06:41:42,232 INFO L226 Difference]: Without dead ends: 3365 [2020-10-27 06:41:42,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:41:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2020-10-27 06:41:42,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 2401. [2020-10-27 06:41:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2401 states. [2020-10-27 06:41:42,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3749 transitions. [2020-10-27 06:41:42,547 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3749 transitions. Word has length 62 [2020-10-27 06:41:42,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:42,548 INFO L481 AbstractCegarLoop]: Abstraction has 2401 states and 3749 transitions. [2020-10-27 06:41:42,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 06:41:42,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3749 transitions. [2020-10-27 06:41:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 06:41:42,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:42,553 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:41:42,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:41:42,554 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:42,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1497137103, now seen corresponding path program 1 times [2020-10-27 06:41:42,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:42,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677915741] [2020-10-27 06:41:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:42,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:42,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:42,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:42,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:45,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:45,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 06:41:45,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:41:45,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2459 [2020-10-27 06:41:45,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:41:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 06:41:45,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:45,215 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:45,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:45,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:45,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:45,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:45,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:41:45,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:45,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:45,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:45,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:45,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:45,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:41:45,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:45,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:45,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:45,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [677915741] [2020-10-27 06:41:45,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:45,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:45,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312212824] [2020-10-27 06:41:45,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:45,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:45,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:45,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:45,281 INFO L87 Difference]: Start difference. First operand 2401 states and 3749 transitions. Second operand 5 states. [2020-10-27 06:41:45,461 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-27 06:41:46,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:46,738 INFO L93 Difference]: Finished difference Result 5449 states and 8620 transitions. [2020-10-27 06:41:46,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:41:46,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-27 06:41:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:46,760 INFO L225 Difference]: With dead ends: 5449 [2020-10-27 06:41:46,760 INFO L226 Difference]: Without dead ends: 3108 [2020-10-27 06:41:46,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:46,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2020-10-27 06:41:47,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2357. [2020-10-27 06:41:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2357 states. [2020-10-27 06:41:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 3690 transitions. [2020-10-27 06:41:47,125 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 3690 transitions. Word has length 62 [2020-10-27 06:41:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:47,125 INFO L481 AbstractCegarLoop]: Abstraction has 2357 states and 3690 transitions. [2020-10-27 06:41:47,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 3690 transitions. [2020-10-27 06:41:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 06:41:47,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:47,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:41:47,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 06:41:47,133 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:47,134 INFO L82 PathProgramCache]: Analyzing trace with hash -598464206, now seen corresponding path program 1 times [2020-10-27 06:41:47,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:47,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964927715] [2020-10-27 06:41:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:47,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:47,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:47,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:48,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:48,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 06:41:48,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:41:48,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1376 [2020-10-27 06:41:48,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:41:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 06:41:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 06:41:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:48,793 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:48,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:48,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:48,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:48,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:48,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:41:48,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:48,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:48,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:48,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:48,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:48,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:48,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:48,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:41:48,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:41:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:41:48,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:41:48,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964927715] [2020-10-27 06:41:48,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:48,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 06:41:48,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180119173] [2020-10-27 06:41:48,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 06:41:48,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:48,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 06:41:48,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:41:48,890 INFO L87 Difference]: Start difference. First operand 2357 states and 3690 transitions. Second operand 6 states. [2020-10-27 06:41:49,060 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 06:41:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:51,247 INFO L93 Difference]: Finished difference Result 8762 states and 14781 transitions. [2020-10-27 06:41:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 06:41:51,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-27 06:41:51,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:51,297 INFO L225 Difference]: With dead ends: 8762 [2020-10-27 06:41:51,298 INFO L226 Difference]: Without dead ends: 6465 [2020-10-27 06:41:51,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:41:51,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6465 states. [2020-10-27 06:41:51,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6465 to 4369. [2020-10-27 06:41:51,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4369 states. [2020-10-27 06:41:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 7121 transitions. [2020-10-27 06:41:51,908 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 7121 transitions. Word has length 63 [2020-10-27 06:41:51,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:51,908 INFO L481 AbstractCegarLoop]: Abstraction has 4369 states and 7121 transitions. [2020-10-27 06:41:51,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 06:41:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 7121 transitions. [2020-10-27 06:41:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 06:41:51,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:51,916 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:41:51,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 06:41:51,917 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:51,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:51,917 INFO L82 PathProgramCache]: Analyzing trace with hash 939875824, now seen corresponding path program 1 times [2020-10-27 06:41:51,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:51,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817243077] [2020-10-27 06:41:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:51,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:51,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:51,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:52,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:52,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:52,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:52,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 06:41:52,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:41:52,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 990 [2020-10-27 06:41:52,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:41:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:52,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:41:52,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:53,090 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:53,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:53,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:53,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:53,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:53,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:53,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:41:53,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:53,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:53,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:53,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:53,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:53,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:53,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:41:53,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:53,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:53,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:53,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:53,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:53,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817243077] [2020-10-27 06:41:53,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:53,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:53,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877286299] [2020-10-27 06:41:53,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:53,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:53,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:53,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:53,155 INFO L87 Difference]: Start difference. First operand 4369 states and 7121 transitions. Second operand 5 states. [2020-10-27 06:41:53,314 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:54,449 INFO L93 Difference]: Finished difference Result 10145 states and 16658 transitions. [2020-10-27 06:41:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:41:54,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-27 06:41:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:54,490 INFO L225 Difference]: With dead ends: 10145 [2020-10-27 06:41:54,490 INFO L226 Difference]: Without dead ends: 5844 [2020-10-27 06:41:54,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:54,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5844 states. [2020-10-27 06:41:55,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5844 to 4327. [2020-10-27 06:41:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4327 states. [2020-10-27 06:41:55,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4327 states to 4327 states and 7066 transitions. [2020-10-27 06:41:55,053 INFO L78 Accepts]: Start accepts. Automaton has 4327 states and 7066 transitions. Word has length 63 [2020-10-27 06:41:55,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:55,053 INFO L481 AbstractCegarLoop]: Abstraction has 4327 states and 7066 transitions. [2020-10-27 06:41:55,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:55,053 INFO L276 IsEmpty]: Start isEmpty. Operand 4327 states and 7066 transitions. [2020-10-27 06:41:55,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 06:41:55,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:55,059 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:41:55,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 06:41:55,059 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:55,060 INFO L82 PathProgramCache]: Analyzing trace with hash 2141459408, now seen corresponding path program 1 times [2020-10-27 06:41:55,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:55,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214451282] [2020-10-27 06:41:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:55,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:55,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:55,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:55,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 06:41:55,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:41:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-27 06:41:55,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:41:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 06:41:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 06:41:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:55,667 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:55,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:55,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:55,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:55,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:55,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:55,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 06:41:55,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:55,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:55,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:55,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:55,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:55,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:55,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:55,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:55,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:41:55,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:41:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:41:55,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:41:55,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214451282] [2020-10-27 06:41:55,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:55,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:55,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313493621] [2020-10-27 06:41:55,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:55,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:55,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:55,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:55,728 INFO L87 Difference]: Start difference. First operand 4327 states and 7066 transitions. Second operand 5 states. [2020-10-27 06:41:55,902 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:41:57,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:41:57,963 INFO L93 Difference]: Finished difference Result 14362 states and 24309 transitions. [2020-10-27 06:41:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:41:57,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-27 06:41:57,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:41:58,013 INFO L225 Difference]: With dead ends: 14362 [2020-10-27 06:41:58,014 INFO L226 Difference]: Without dead ends: 10103 [2020-10-27 06:41:58,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:41:58,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10103 states. [2020-10-27 06:41:58,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10103 to 7421. [2020-10-27 06:41:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7421 states. [2020-10-27 06:41:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7421 states to 7421 states and 12227 transitions. [2020-10-27 06:41:58,922 INFO L78 Accepts]: Start accepts. Automaton has 7421 states and 12227 transitions. Word has length 64 [2020-10-27 06:41:58,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:41:58,922 INFO L481 AbstractCegarLoop]: Abstraction has 7421 states and 12227 transitions. [2020-10-27 06:41:58,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:41:58,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7421 states and 12227 transitions. [2020-10-27 06:41:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 06:41:58,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:41:58,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:41:58,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 06:41:58,929 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:41:58,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:41:58,930 INFO L82 PathProgramCache]: Analyzing trace with hash -615167858, now seen corresponding path program 1 times [2020-10-27 06:41:58,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:41:58,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677069445] [2020-10-27 06:41:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:41:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:58,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:58,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:59,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:59,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:59,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 06:41:59,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:41:59,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-27 06:41:59,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:59,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:41:59,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:41:59,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:41:59,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:59,354 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:41:59,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:41:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:59,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:59,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:59,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:41:59,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:59,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:41:59,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:41:59,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:59,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:59,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:41:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:41:59,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:41:59,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:41:59,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:41:59,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:41:59,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:41:59,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:41:59,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:41:59,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:41:59,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:41:59,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:41:59,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:41:59,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677069445] [2020-10-27 06:41:59,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:41:59,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:41:59,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343009467] [2020-10-27 06:41:59,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:41:59,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:41:59,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:41:59,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:41:59,416 INFO L87 Difference]: Start difference. First operand 7421 states and 12227 transitions. Second operand 5 states. [2020-10-27 06:41:59,573 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:42:01,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:42:01,002 INFO L93 Difference]: Finished difference Result 17399 states and 28720 transitions. [2020-10-27 06:42:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:42:01,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-27 06:42:01,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:42:01,045 INFO L225 Difference]: With dead ends: 17399 [2020-10-27 06:42:01,045 INFO L226 Difference]: Without dead ends: 10046 [2020-10-27 06:42:01,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:42:01,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10046 states. [2020-10-27 06:42:01,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10046 to 7373. [2020-10-27 06:42:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7373 states. [2020-10-27 06:42:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7373 states to 7373 states and 12160 transitions. [2020-10-27 06:42:02,027 INFO L78 Accepts]: Start accepts. Automaton has 7373 states and 12160 transitions. Word has length 64 [2020-10-27 06:42:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:42:02,027 INFO L481 AbstractCegarLoop]: Abstraction has 7373 states and 12160 transitions. [2020-10-27 06:42:02,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:42:02,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7373 states and 12160 transitions. [2020-10-27 06:42:02,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 06:42:02,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:42:02,031 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 06:42:02,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 06:42:02,031 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:42:02,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:42:02,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1084102541, now seen corresponding path program 1 times [2020-10-27 06:42:02,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:42:02,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624390740] [2020-10-27 06:42:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:42:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:02,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:02,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:02,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:02,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 06:42:02,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 06:42:02,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 06:42:02,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:42:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 06:42:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 06:42:02,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:02,378 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:42:02,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:42:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:02,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:02,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:02,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:42:02,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:02,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 06:42:02,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:02,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:02,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:02,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:02,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:02,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:42:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:02,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:02,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:02,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:02,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:02,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:42:02,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:02,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 06:42:02,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:42:02,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624390740] [2020-10-27 06:42:02,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:42:02,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 06:42:02,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559454641] [2020-10-27 06:42:02,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:42:02,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:42:02,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:42:02,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:42:02,439 INFO L87 Difference]: Start difference. First operand 7373 states and 12160 transitions. Second operand 5 states. [2020-10-27 06:42:02,611 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:42:04,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:42:04,653 INFO L93 Difference]: Finished difference Result 18855 states and 32464 transitions. [2020-10-27 06:42:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:42:04,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-27 06:42:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:42:04,733 INFO L225 Difference]: With dead ends: 18855 [2020-10-27 06:42:04,733 INFO L226 Difference]: Without dead ends: 13506 [2020-10-27 06:42:04,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:42:04,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13506 states. [2020-10-27 06:42:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13506 to 9681. [2020-10-27 06:42:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9681 states. [2020-10-27 06:42:05,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9681 states to 9681 states and 16443 transitions. [2020-10-27 06:42:05,896 INFO L78 Accepts]: Start accepts. Automaton has 9681 states and 16443 transitions. Word has length 65 [2020-10-27 06:42:05,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:42:05,896 INFO L481 AbstractCegarLoop]: Abstraction has 9681 states and 16443 transitions. [2020-10-27 06:42:05,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:42:05,896 INFO L276 IsEmpty]: Start isEmpty. Operand 9681 states and 16443 transitions. [2020-10-27 06:42:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 06:42:05,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:42:05,907 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:42:05,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 06:42:05,907 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:42:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:42:05,908 INFO L82 PathProgramCache]: Analyzing trace with hash 794763447, now seen corresponding path program 1 times [2020-10-27 06:42:05,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:42:05,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212265772] [2020-10-27 06:42:05,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:42:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:05,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:05,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:06,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 06:42:06,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:42:06,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-27 06:42:06,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 06:42:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 06:42:06,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:06,616 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:42:06,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:42:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:06,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:42:06,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:42:06,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:06,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:42:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:06,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:06,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:06,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:06,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:42:06,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:06,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:06,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 06:42:06,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:06,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 06:42:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:06,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:06,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:06,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 06:42:06,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:06,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:06,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:06,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:06,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 06:42:06,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:06,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 06:42:06,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212265772] [2020-10-27 06:42:06,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:42:06,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 06:42:06,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239380147] [2020-10-27 06:42:06,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:42:06,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:42:06,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:42:06,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:42:06,683 INFO L87 Difference]: Start difference. First operand 9681 states and 16443 transitions. Second operand 5 states. [2020-10-27 06:42:07,062 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-27 06:42:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:42:11,177 INFO L93 Difference]: Finished difference Result 33421 states and 58336 transitions. [2020-10-27 06:42:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:42:11,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-27 06:42:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:42:11,268 INFO L225 Difference]: With dead ends: 33421 [2020-10-27 06:42:11,268 INFO L226 Difference]: Without dead ends: 18550 [2020-10-27 06:42:11,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:42:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18550 states. [2020-10-27 06:42:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18550 to 13853. [2020-10-27 06:42:12,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13853 states. [2020-10-27 06:42:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13853 states to 13853 states and 23895 transitions. [2020-10-27 06:42:12,946 INFO L78 Accepts]: Start accepts. Automaton has 13853 states and 23895 transitions. Word has length 88 [2020-10-27 06:42:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:42:12,946 INFO L481 AbstractCegarLoop]: Abstraction has 13853 states and 23895 transitions. [2020-10-27 06:42:12,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:42:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 13853 states and 23895 transitions. [2020-10-27 06:42:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 06:42:12,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:42:12,962 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-27 06:42:12,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 06:42:12,963 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:42:12,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:42:12,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1517481195, now seen corresponding path program 1 times [2020-10-27 06:42:12,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:42:12,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419407193] [2020-10-27 06:42:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:42:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:13,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:13,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:13,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:13,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:13,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:15,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:15,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 06:42:15,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:42:15,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2557 [2020-10-27 06:42:15,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:15,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:42:15,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 06:42:15,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 06:42:15,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:15,860 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:42:15,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:42:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:15,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:15,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:15,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:42:15,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:15,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:42:15,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:15,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:15,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:15,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:15,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:15,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 06:42:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:15,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:15,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:15,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:15,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:15,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:42:15,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:15,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 06:42:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:15,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:15,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:15,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 06:42:15,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:15,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:15,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 06:42:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:15,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 06:42:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:15,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:15,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:15,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 06:42:15,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:15,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:15,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 06:42:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:15,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:15,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 06:42:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:15,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:15,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:15,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 06:42:15,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:15,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 06:42:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:15,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 06:42:15,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419407193] [2020-10-27 06:42:15,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:42:15,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 06:42:15,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914855899] [2020-10-27 06:42:15,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 06:42:15,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:42:15,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 06:42:15,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:42:15,963 INFO L87 Difference]: Start difference. First operand 13853 states and 23895 transitions. Second operand 6 states. [2020-10-27 06:42:16,239 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 06:42:21,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:42:21,581 INFO L93 Difference]: Finished difference Result 54946 states and 96021 transitions. [2020-10-27 06:42:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 06:42:21,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-27 06:42:21,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:42:21,880 INFO L225 Difference]: With dead ends: 54946 [2020-10-27 06:42:21,881 INFO L226 Difference]: Without dead ends: 41137 [2020-10-27 06:42:22,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-27 06:42:22,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41137 states. [2020-10-27 06:42:25,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41137 to 30339. [2020-10-27 06:42:25,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30339 states. [2020-10-27 06:42:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30339 states to 30339 states and 50368 transitions. [2020-10-27 06:42:25,840 INFO L78 Accepts]: Start accepts. Automaton has 30339 states and 50368 transitions. Word has length 105 [2020-10-27 06:42:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:42:25,840 INFO L481 AbstractCegarLoop]: Abstraction has 30339 states and 50368 transitions. [2020-10-27 06:42:25,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 06:42:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 30339 states and 50368 transitions. [2020-10-27 06:42:26,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 06:42:26,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:42:26,162 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-27 06:42:26,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 06:42:26,162 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:42:26,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:42:26,163 INFO L82 PathProgramCache]: Analyzing trace with hash 469785267, now seen corresponding path program 1 times [2020-10-27 06:42:26,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:42:26,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033113004] [2020-10-27 06:42:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:42:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:26,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:26,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:26,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:26,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:31,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:31,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 06:42:31,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:42:31,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 06:42:31,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:31,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:42:31,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:42:31,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 06:42:31,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:31,403 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:42:31,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:42:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:31,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:31,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:42:31,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:31,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 06:42:31,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:31,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:42:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:31,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 06:42:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:31,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:31,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:31,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 06:42:31,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:31,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 06:42:31,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:31,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:42:31,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:42:31,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 06:42:31,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:31,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 06:42:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:31,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:31,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:31,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:31,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:31,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:31,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:42:31,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:31,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 06:42:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:31,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:31,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:31,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:31,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:31,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:31,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:42:31,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:31,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 06:42:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:31,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:31,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:31,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:31,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:31,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:31,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:42:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:42:31,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:42:31,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:31,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 06:42:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:31,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:31,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:31,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:42:31,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:31,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:42:31,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:42:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:42:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:42:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:31,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 06:42:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:31,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:31,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:31,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 06:42:31,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:42:31,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 06:42:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:31,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 06:42:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:42:31,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:42:31,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:42:31,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 06:42:31,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:42:31,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:42:31,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:42:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:42:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 06:42:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:42:31,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:42:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 06:42:31,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033113004] [2020-10-27 06:42:31,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:42:31,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-27 06:42:31,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119297256] [2020-10-27 06:42:31,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 06:42:31,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:42:31,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 06:42:31,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-27 06:42:31,777 INFO L87 Difference]: Start difference. First operand 30339 states and 50368 transitions. Second operand 13 states. [2020-10-27 06:42:32,089 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 06:42:33,697 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 06:42:35,626 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 06:42:36,589 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-27 06:42:53,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:42:53,692 INFO L93 Difference]: Finished difference Result 205640 states and 358532 transitions. [2020-10-27 06:42:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-27 06:42:53,692 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-10-27 06:42:53,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:42:55,472 INFO L225 Difference]: With dead ends: 205640 [2020-10-27 06:42:55,472 INFO L226 Difference]: Without dead ends: 175329 [2020-10-27 06:42:55,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=800, Invalid=2982, Unknown=0, NotChecked=0, Total=3782 [2020-10-27 06:42:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175329 states. [2020-10-27 06:43:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175329 to 101551. [2020-10-27 06:43:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101551 states. [2020-10-27 06:43:07,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101551 states to 101551 states and 179290 transitions. [2020-10-27 06:43:07,944 INFO L78 Accepts]: Start accepts. Automaton has 101551 states and 179290 transitions. Word has length 146 [2020-10-27 06:43:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:43:07,945 INFO L481 AbstractCegarLoop]: Abstraction has 101551 states and 179290 transitions. [2020-10-27 06:43:07,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 06:43:07,945 INFO L276 IsEmpty]: Start isEmpty. Operand 101551 states and 179290 transitions. [2020-10-27 06:43:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 06:43:08,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:43:08,213 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:43:08,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 06:43:08,214 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:43:08,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:43:08,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1517044859, now seen corresponding path program 1 times [2020-10-27 06:43:08,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:43:08,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669319277] [2020-10-27 06:43:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:43:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:08,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:08,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:08,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:08,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:08,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:08,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:08,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:08,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:09,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:10,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:10,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:10,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:10,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:13,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-27 06:43:13,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 06:43:13,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:43:13,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:13,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:43:13,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 06:43:13,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 06:43:13,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:13,417 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:43:13,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:43:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:13,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:13,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:43:13,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:13,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:43:13,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:43:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:13,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:43:13,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:13,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 06:43:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:13,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:13,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 06:43:13,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:43:13,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 06:43:13,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:43:13,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:43:13,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 06:43:13,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:13,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 06:43:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:13,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:43:13,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:43:13,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:43:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:13,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:43:13,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:13,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-27 06:43:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:13,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:13,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:43:13,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:13,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 06:43:13,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:43:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:13,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:43:13,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:13,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 06:43:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:13,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:13,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:43:13,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:43:13,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:13,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:43:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:13,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:43:13,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:13,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 06:43:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:13,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:13,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:43:13,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:13,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:43:13,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:43:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:43:13,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:13,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 06:43:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:13,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:13,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 06:43:13,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:13,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:43:13,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:43:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:13,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:43:13,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:13,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 06:43:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:13,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:13,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 06:43:13,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:13,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:43:13,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:13,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:43:13,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 06:43:13,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:43:13,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:13,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-27 06:43:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:13,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:13,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:43:13,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:13,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:43:13,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:43:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 06:43:13,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:43:13,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:13,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-27 06:43:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:13,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:13,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:13,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 06:43:13,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:13,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:43:13,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:13,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:43:13,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 06:43:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:43:13,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-27 06:43:13,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669319277] [2020-10-27 06:43:13,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:43:13,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 06:43:13,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667364535] [2020-10-27 06:43:13,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 06:43:13,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:43:13,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 06:43:13,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-27 06:43:13,989 INFO L87 Difference]: Start difference. First operand 101551 states and 179290 transitions. Second operand 12 states. [2020-10-27 06:43:14,188 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-27 06:43:16,511 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-27 06:43:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:43:35,254 INFO L93 Difference]: Finished difference Result 246112 states and 426782 transitions. [2020-10-27 06:43:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 06:43:35,254 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 172 [2020-10-27 06:43:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:43:36,550 INFO L225 Difference]: With dead ends: 246112 [2020-10-27 06:43:36,551 INFO L226 Difference]: Without dead ends: 144599 [2020-10-27 06:43:37,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=561, Invalid=2745, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 06:43:37,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144599 states. [2020-10-27 06:43:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144599 to 71264. [2020-10-27 06:43:46,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71264 states. [2020-10-27 06:43:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71264 states to 71264 states and 111194 transitions. [2020-10-27 06:43:47,014 INFO L78 Accepts]: Start accepts. Automaton has 71264 states and 111194 transitions. Word has length 172 [2020-10-27 06:43:47,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:43:47,014 INFO L481 AbstractCegarLoop]: Abstraction has 71264 states and 111194 transitions. [2020-10-27 06:43:47,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 06:43:47,014 INFO L276 IsEmpty]: Start isEmpty. Operand 71264 states and 111194 transitions. [2020-10-27 06:43:47,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 06:43:47,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:43:47,122 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 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] [2020-10-27 06:43:47,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 06:43:47,122 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:43:47,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:43:47,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1813167577, now seen corresponding path program 1 times [2020-10-27 06:43:47,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:43:47,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193387766] [2020-10-27 06:43:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:43:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:47,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:47,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:47,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:47,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:47,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:52,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:52,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-27 06:43:52,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:43:52,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 06:43:52,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 06:43:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:43:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-27 06:43:52,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:52,341 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 06:43:52,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:43:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:52,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:52,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:52,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:43:52,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:52,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 06:43:52,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:43:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:43:52,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:52,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 06:43:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:52,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:52,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:52,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:52,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 06:43:52,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 06:43:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 06:43:52,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 06:43:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:43:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 06:43:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:52,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 06:43:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:52,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:52,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:52,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:43:52,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:52,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:43:52,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:52,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:43:52,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:43:52,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:43:52,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:52,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-27 06:43:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:52,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:52,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:52,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:43:52,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 06:43:52,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:43:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:43:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:43:52,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:52,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-27 06:43:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:52,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:52,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:43:52,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:43:52,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:43:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 06:43:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:52,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 06:43:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:52,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:52,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:52,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 06:43:52,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 06:43:52,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 06:43:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 06:43:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 06:43:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-27 06:43:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:52,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:52,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:52,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 06:43:52,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:52,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 06:43:52,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:52,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:43:52,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:43:52,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 06:43:52,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:52,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 06:43:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:52,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:52,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:52,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 06:43:52,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 06:43:52,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:43:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 06:43:52,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:43:52,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:52,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-27 06:43:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:43:52,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:43:52,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:43:52,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 06:43:52,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:43:52,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 06:43:52,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:43:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:43:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 06:43:52,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:43:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:43:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 43 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 06:43:52,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193387766] [2020-10-27 06:43:52,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 06:43:52,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 06:43:52,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139216303] [2020-10-27 06:43:52,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 06:43:52,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:43:52,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 06:43:52,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-27 06:43:52,854 INFO L87 Difference]: Start difference. First operand 71264 states and 111194 transitions. Second operand 15 states. [2020-10-27 06:43:53,257 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-10-27 06:43:53,626 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-27 06:43:55,052 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 06:43:57,426 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 119 [2020-10-27 06:44:00,353 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120