/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:54:54,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:54:54,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:54:54,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:54:54,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:54:54,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:54:54,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:54:54,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:54:54,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:54:54,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:54:54,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:54:54,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:54:54,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:54:54,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:54:54,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:54:54,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:54:54,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:54:54,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:54:54,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:54:54,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:54:54,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:54:54,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:54:54,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:54:54,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:54:54,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:54:54,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:54:54,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:54:54,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:54:54,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:54:54,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:54:54,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:54:54,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:54:54,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:54:54,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:54:54,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:54:54,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:54:54,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:54:54,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:54:54,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:54:54,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:54:54,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:54:54,380 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 [2020-10-29 04:54:54,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:54:54,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:54:54,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:54:54,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:54:54,416 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:54:54,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:54:54,416 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:54:54,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:54:54,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:54:54,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:54:54,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:54:54,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:54:54,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:54:54,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:54:54,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:54:54,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:54:54,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:54:54,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:54:54,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:54:54,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:54:54,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:54:54,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:54:54,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:54:54,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:54:54,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:54:54,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:54:54,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:54:54,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:54:54,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:54:54,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:54:54,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:54:54,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:54:54,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:54:54,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:54:54,905 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:54:54,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label23.c [2020-10-29 04:54:54,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c29129d1d/3e67a2768801463a974c91d930d9bd4f/FLAGfbd709eec [2020-10-29 04:54:55,853 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:54:55,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label23.c [2020-10-29 04:54:55,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c29129d1d/3e67a2768801463a974c91d930d9bd4f/FLAGfbd709eec [2020-10-29 04:54:56,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c29129d1d/3e67a2768801463a974c91d930d9bd4f [2020-10-29 04:54:56,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:54:56,031 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:54:56,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:54:56,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:54:56,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:54:56,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:54:56" (1/1) ... [2020-10-29 04:54:56,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85a5980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:56, skipping insertion in model container [2020-10-29 04:54:56,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:54:56" (1/1) ... [2020-10-29 04:54:56,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:54:56,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:54:56,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:54:56,813 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:54:57,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:54:57,158 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:54:57,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:57 WrapperNode [2020-10-29 04:54:57,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:54:57,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:54:57,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:54:57,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:54:57,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:57" (1/1) ... [2020-10-29 04:54:57,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:57" (1/1) ... [2020-10-29 04:54:57,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:57" (1/1) ... [2020-10-29 04:54:57,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:57" (1/1) ... [2020-10-29 04:54:57,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:57" (1/1) ... [2020-10-29 04:54:57,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:57" (1/1) ... [2020-10-29 04:54:57,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:57" (1/1) ... [2020-10-29 04:54:57,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:54:57,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:54:57,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:54:57,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:54:57,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:57" (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 [2020-10-29 04:54:57,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:54:57,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:54:57,444 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:54:57,445 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:54:57,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:54:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:54:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:54:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:54:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:54:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:54:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:54:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:54:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:54:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:54:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:54:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:54:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:54:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:54:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:54:59,721 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:54:59,722 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:54:59,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:54:59 BoogieIcfgContainer [2020-10-29 04:54:59,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:54:59,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:54:59,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:54:59,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:54:59,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:54:56" (1/3) ... [2020-10-29 04:54:59,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749fb267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:54:59, skipping insertion in model container [2020-10-29 04:54:59,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:54:57" (2/3) ... [2020-10-29 04:54:59,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749fb267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:54:59, skipping insertion in model container [2020-10-29 04:54:59,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:54:59" (3/3) ... [2020-10-29 04:54:59,736 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label23.c [2020-10-29 04:54:59,748 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:54:59,753 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:54:59,767 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:54:59,809 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:54:59,809 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:54:59,810 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:54:59,810 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:54:59,810 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:54:59,810 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:54:59,810 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:54:59,810 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:54:59,847 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:54:59,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-29 04:54:59,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:54:59,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:54:59,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:54:59,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:54:59,880 INFO L82 PathProgramCache]: Analyzing trace with hash 93119384, now seen corresponding path program 1 times [2020-10-29 04:54:59,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:54:59,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092882836] [2020-10-29 04:54:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:00,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:04,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:04,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-29 04:55:04,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:04,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4389 [2020-10-29 04:55:04,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:04,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:04,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:55:04,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:04,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 04:55:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:55:05,343 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:05,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:05,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:05,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:05,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 04:55:05,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:05,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:05,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:05,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:05,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092882836] [2020-10-29 04:55:05,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:55:05,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 04:55:05,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613536516] [2020-10-29 04:55:05,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:05,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:05,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:05,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:05,768 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 5 states. [2020-10-29 04:55:06,116 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:06,597 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 04:55:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:11,192 INFO L93 Difference]: Finished difference Result 1105 states and 1977 transitions. [2020-10-29 04:55:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:55:11,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-29 04:55:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:11,217 INFO L225 Difference]: With dead ends: 1105 [2020-10-29 04:55:11,217 INFO L226 Difference]: Without dead ends: 700 [2020-10-29 04:55:11,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:55:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-29 04:55:11,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 680. [2020-10-29 04:55:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-10-29 04:55:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1113 transitions. [2020-10-29 04:55:11,350 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1113 transitions. Word has length 178 [2020-10-29 04:55:11,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:11,354 INFO L481 AbstractCegarLoop]: Abstraction has 680 states and 1113 transitions. [2020-10-29 04:55:11,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:11,354 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1113 transitions. [2020-10-29 04:55:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 04:55:11,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:11,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:11,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:55:11,373 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:11,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:11,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1438347963, now seen corresponding path program 1 times [2020-10-29 04:55:11,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:11,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273209575] [2020-10-29 04:55:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:11,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:13,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:16,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:16,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 04:55:16,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:16,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4574 [2020-10-29 04:55:16,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:16,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:16,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:55:16,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 04:55:16,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:16,481 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:16,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:16,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:16,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:16,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:16,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:16,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:55:16,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:16,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:16,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:16,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 04:55:16,673 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:55:16,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:16,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:16,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:16,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:55:16,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 04:55:16,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:16,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:16,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:16,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:55:16,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:16,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273209575] [2020-10-29 04:55:16,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:16,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:16,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047981182] [2020-10-29 04:55:16,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:16,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:16,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:16,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:16,866 INFO L87 Difference]: Start difference. First operand 680 states and 1113 transitions. Second operand 5 states. [2020-10-29 04:55:17,360 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:20,717 INFO L93 Difference]: Finished difference Result 2009 states and 3341 transitions. [2020-10-29 04:55:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:20,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-29 04:55:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:20,729 INFO L225 Difference]: With dead ends: 2009 [2020-10-29 04:55:20,729 INFO L226 Difference]: Without dead ends: 1335 [2020-10-29 04:55:20,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:20,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-10-29 04:55:20,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 894. [2020-10-29 04:55:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-10-29 04:55:20,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1451 transitions. [2020-10-29 04:55:20,800 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1451 transitions. Word has length 189 [2020-10-29 04:55:20,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:20,802 INFO L481 AbstractCegarLoop]: Abstraction has 894 states and 1451 transitions. [2020-10-29 04:55:20,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:20,802 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1451 transitions. [2020-10-29 04:55:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 04:55:20,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:20,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:20,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:55:20,807 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:20,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:20,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1507067849, now seen corresponding path program 1 times [2020-10-29 04:55:20,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:20,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508660806] [2020-10-29 04:55:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:20,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:21,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:22,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:22,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-29 04:55:22,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:22,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1882 [2020-10-29 04:55:22,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:22,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:22,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 04:55:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 04:55:22,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:23,050 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:23,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:23,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:23,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:23,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:23,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:55:23,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:23,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:23,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:23,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:23,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:23,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:23,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:23,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 04:55:23,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:23,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:55:23,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:23,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:23,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:55:23,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:23,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508660806] [2020-10-29 04:55:23,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:23,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:23,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792911401] [2020-10-29 04:55:23,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:23,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:23,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:23,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:23,395 INFO L87 Difference]: Start difference. First operand 894 states and 1451 transitions. Second operand 5 states. [2020-10-29 04:55:23,814 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:55:27,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:27,279 INFO L93 Difference]: Finished difference Result 2646 states and 4374 transitions. [2020-10-29 04:55:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:27,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-29 04:55:27,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:27,300 INFO L225 Difference]: With dead ends: 2646 [2020-10-29 04:55:27,300 INFO L226 Difference]: Without dead ends: 1758 [2020-10-29 04:55:27,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2020-10-29 04:55:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1740. [2020-10-29 04:55:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1740 states. [2020-10-29 04:55:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2828 transitions. [2020-10-29 04:55:27,391 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2828 transitions. Word has length 190 [2020-10-29 04:55:27,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:27,391 INFO L481 AbstractCegarLoop]: Abstraction has 1740 states and 2828 transitions. [2020-10-29 04:55:27,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2828 transitions. [2020-10-29 04:55:27,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-29 04:55:27,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:27,398 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:27,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:55:27,398 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:27,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:27,399 INFO L82 PathProgramCache]: Analyzing trace with hash 368711923, now seen corresponding path program 1 times [2020-10-29 04:55:27,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:27,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194862817] [2020-10-29 04:55:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:27,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:28,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:28,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-29 04:55:28,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:28,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-10-29 04:55:28,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:28,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:55:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:28,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 04:55:28,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:28,442 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:28,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:28,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:28,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:28,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:28,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 04:55:28,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:28,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:28,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:28,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:28,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:28,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:28,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:55:28,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 04:55:28,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:28,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:55:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:28,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194862817] [2020-10-29 04:55:28,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:55:28,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:55:28,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221551199] [2020-10-29 04:55:28,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:55:28,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:28,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:55:28,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:55:28,755 INFO L87 Difference]: Start difference. First operand 1740 states and 2828 transitions. Second operand 7 states. [2020-10-29 04:55:29,016 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:30,117 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:55:32,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:32,616 INFO L93 Difference]: Finished difference Result 4826 states and 8167 transitions. [2020-10-29 04:55:32,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:55:32,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-29 04:55:32,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:32,639 INFO L225 Difference]: With dead ends: 4826 [2020-10-29 04:55:32,640 INFO L226 Difference]: Without dead ends: 3092 [2020-10-29 04:55:32,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:55:32,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2020-10-29 04:55:32,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 3037. [2020-10-29 04:55:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3037 states. [2020-10-29 04:55:32,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3037 states to 3037 states and 4890 transitions. [2020-10-29 04:55:32,766 INFO L78 Accepts]: Start accepts. Automaton has 3037 states and 4890 transitions. Word has length 192 [2020-10-29 04:55:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:32,767 INFO L481 AbstractCegarLoop]: Abstraction has 3037 states and 4890 transitions. [2020-10-29 04:55:32,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:55:32,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3037 states and 4890 transitions. [2020-10-29 04:55:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-29 04:55:32,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:32,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:32,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:55:32,777 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:32,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:32,777 INFO L82 PathProgramCache]: Analyzing trace with hash -663430737, now seen corresponding path program 1 times [2020-10-29 04:55:32,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:32,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826992346] [2020-10-29 04:55:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:32,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:34,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:34,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-29 04:55:34,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:34,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2035 [2020-10-29 04:55:34,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:34,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:55:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-29 04:55:34,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:35,196 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:35,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:35,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:35,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:35,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:35,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 04:55:35,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:35,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:35,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:35,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:35,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:35,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:35,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:55:35,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:35,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 04:55:35,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:35,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:55:35,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:55:35,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826992346] [2020-10-29 04:55:35,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:35,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:35,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311281004] [2020-10-29 04:55:35,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:55:35,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:35,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:55:35,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:35,468 INFO L87 Difference]: Start difference. First operand 3037 states and 4890 transitions. Second operand 6 states. [2020-10-29 04:55:35,744 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:38,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:38,815 INFO L93 Difference]: Finished difference Result 8259 states and 14020 transitions. [2020-10-29 04:55:38,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 04:55:38,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2020-10-29 04:55:38,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:38,846 INFO L225 Difference]: With dead ends: 8259 [2020-10-29 04:55:38,846 INFO L226 Difference]: Without dead ends: 5228 [2020-10-29 04:55:38,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:55:38,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2020-10-29 04:55:39,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 5186. [2020-10-29 04:55:39,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5186 states. [2020-10-29 04:55:39,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 7668 transitions. [2020-10-29 04:55:39,111 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 7668 transitions. Word has length 194 [2020-10-29 04:55:39,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:39,111 INFO L481 AbstractCegarLoop]: Abstraction has 5186 states and 7668 transitions. [2020-10-29 04:55:39,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:55:39,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 7668 transitions. [2020-10-29 04:55:39,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-29 04:55:39,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:39,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:39,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:55:39,131 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:39,132 INFO L82 PathProgramCache]: Analyzing trace with hash -346435320, now seen corresponding path program 1 times [2020-10-29 04:55:39,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:39,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797101309] [2020-10-29 04:55:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:39,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:40,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:41,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:41,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 04:55:41,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:41,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1924 [2020-10-29 04:55:41,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:41,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:41,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 04:55:41,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 04:55:41,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:41,470 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:41,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:41,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:41,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:41,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:41,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:41,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:55:41,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:41,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:41,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:41,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:41,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:41,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:41,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:41,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:41,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:41,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:55:41,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:41,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 04:55:41,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:41,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:41,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 04:55:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:41,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797101309] [2020-10-29 04:55:41,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:41,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:41,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831136558] [2020-10-29 04:55:41,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:41,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:41,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:41,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:41,731 INFO L87 Difference]: Start difference. First operand 5186 states and 7668 transitions. Second operand 5 states. [2020-10-29 04:55:42,244 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:45,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:45,236 INFO L93 Difference]: Finished difference Result 14579 states and 22246 transitions. [2020-10-29 04:55:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:45,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2020-10-29 04:55:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:45,298 INFO L225 Difference]: With dead ends: 14579 [2020-10-29 04:55:45,298 INFO L226 Difference]: Without dead ends: 9399 [2020-10-29 04:55:45,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:45,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9399 states. [2020-10-29 04:55:45,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9399 to 7507. [2020-10-29 04:55:45,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7507 states. [2020-10-29 04:55:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7507 states to 7507 states and 10948 transitions. [2020-10-29 04:55:45,635 INFO L78 Accepts]: Start accepts. Automaton has 7507 states and 10948 transitions. Word has length 210 [2020-10-29 04:55:45,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:45,635 INFO L481 AbstractCegarLoop]: Abstraction has 7507 states and 10948 transitions. [2020-10-29 04:55:45,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 7507 states and 10948 transitions. [2020-10-29 04:55:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-29 04:55:45,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:45,657 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:45,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:55:45,658 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:45,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:45,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1207807884, now seen corresponding path program 1 times [2020-10-29 04:55:45,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:45,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903480423] [2020-10-29 04:55:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:45,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:46,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:47,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:47,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-29 04:55:47,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:47,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1945 [2020-10-29 04:55:47,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:47,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:55:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 04:55:47,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:48,020 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:48,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:48,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:48,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:48,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:55:48,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:48,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:48,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:48,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:48,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:48,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:48,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:48,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 04:55:48,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:48,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:48,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:48,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:55:48,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:48,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:48,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:48,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:55:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 04:55:48,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:48,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:55:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:55:48,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903480423] [2020-10-29 04:55:48,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:48,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:55:48,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627086872] [2020-10-29 04:55:48,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:55:48,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:48,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:55:48,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:55:48,391 INFO L87 Difference]: Start difference. First operand 7507 states and 10948 transitions. Second operand 7 states. [2020-10-29 04:55:48,657 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:49,641 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:55:52,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:52,557 INFO L93 Difference]: Finished difference Result 17321 states and 27081 transitions. [2020-10-29 04:55:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:55:52,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-29 04:55:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:52,607 INFO L225 Difference]: With dead ends: 17321 [2020-10-29 04:55:52,607 INFO L226 Difference]: Without dead ends: 9820 [2020-10-29 04:55:52,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:55:52,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9820 states. [2020-10-29 04:55:52,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9820 to 9668. [2020-10-29 04:55:52,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9668 states. [2020-10-29 04:55:52,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9668 states to 9668 states and 13817 transitions. [2020-10-29 04:55:52,983 INFO L78 Accepts]: Start accepts. Automaton has 9668 states and 13817 transitions. Word has length 213 [2020-10-29 04:55:52,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:52,984 INFO L481 AbstractCegarLoop]: Abstraction has 9668 states and 13817 transitions. [2020-10-29 04:55:52,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:55:52,984 INFO L276 IsEmpty]: Start isEmpty. Operand 9668 states and 13817 transitions. [2020-10-29 04:55:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-29 04:55:53,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:53,010 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:53,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:55:53,010 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:53,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:53,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1746063864, now seen corresponding path program 1 times [2020-10-29 04:55:53,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:53,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337153034] [2020-10-29 04:55:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:55,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:55,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-29 04:55:55,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:55,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2045 [2020-10-29 04:55:55,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:55,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:55:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:55,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 04:55:55,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:55,378 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:55,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:55,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:55,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:55,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:55,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:55,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:55:55,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:55,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:55,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:55,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:55,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:55,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:55,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:55,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:55,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 04:55:55,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:55,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 04:55:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:55,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:55,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:55,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:55,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 04:55:55,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:55,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 04:55:55,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:55,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:55,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:55,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 04:55:55,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:55:56,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337153034] [2020-10-29 04:55:56,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:56,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:55:56,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118201328] [2020-10-29 04:55:56,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:55:56,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:56,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:55:56,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:55:56,011 INFO L87 Difference]: Start difference. First operand 9668 states and 13817 transitions. Second operand 8 states. [2020-10-29 04:55:56,300 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:58,770 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:56:00,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:00,502 INFO L93 Difference]: Finished difference Result 26450 states and 40113 transitions. [2020-10-29 04:56:00,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:56:00,503 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 215 [2020-10-29 04:56:00,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:00,576 INFO L225 Difference]: With dead ends: 26450 [2020-10-29 04:56:00,577 INFO L226 Difference]: Without dead ends: 16788 [2020-10-29 04:56:00,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:56:00,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16788 states. [2020-10-29 04:56:01,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16788 to 16575. [2020-10-29 04:56:01,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16575 states. [2020-10-29 04:56:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16575 states to 16575 states and 23936 transitions. [2020-10-29 04:56:01,141 INFO L78 Accepts]: Start accepts. Automaton has 16575 states and 23936 transitions. Word has length 215 [2020-10-29 04:56:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:01,142 INFO L481 AbstractCegarLoop]: Abstraction has 16575 states and 23936 transitions. [2020-10-29 04:56:01,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:56:01,142 INFO L276 IsEmpty]: Start isEmpty. Operand 16575 states and 23936 transitions. [2020-10-29 04:56:01,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-29 04:56:01,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:01,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:01,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:56:01,171 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:01,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1846245205, now seen corresponding path program 1 times [2020-10-29 04:56:01,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:01,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599777253] [2020-10-29 04:56:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:01,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:01,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:06,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:06,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 04:56:06,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:56:06,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-29 04:56:06,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:06,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:56:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:56:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 04:56:06,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:06,531 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:06,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:06,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:06,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:06,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:06,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:56:06,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:06,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:06,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:06,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:06,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:06,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:06,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:06,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:06,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:56:06,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:06,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:56:06,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:06,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:06,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:06,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:06,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:06,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:56:06,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:56:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:56:06,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:06,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:06,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 04:56:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:06,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:56:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:06,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:06,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:56:06,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 04:56:06,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:06,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:56:06,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 52 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 04:56:06,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599777253] [2020-10-29 04:56:06,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:06,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:06,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114006654] [2020-10-29 04:56:06,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:06,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:06,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:06,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:06,865 INFO L87 Difference]: Start difference. First operand 16575 states and 23936 transitions. Second operand 7 states. [2020-10-29 04:56:07,393 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:08,019 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:56:12,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:12,935 INFO L93 Difference]: Finished difference Result 48139 states and 78856 transitions. [2020-10-29 04:56:12,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:56:12,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-10-29 04:56:12,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:13,106 INFO L225 Difference]: With dead ends: 48139 [2020-10-29 04:56:13,106 INFO L226 Difference]: Without dead ends: 31570 [2020-10-29 04:56:13,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:56:13,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31570 states. [2020-10-29 04:56:14,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31570 to 30573. [2020-10-29 04:56:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30573 states. [2020-10-29 04:56:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30573 states to 30573 states and 44551 transitions. [2020-10-29 04:56:14,222 INFO L78 Accepts]: Start accepts. Automaton has 30573 states and 44551 transitions. Word has length 222 [2020-10-29 04:56:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:14,222 INFO L481 AbstractCegarLoop]: Abstraction has 30573 states and 44551 transitions. [2020-10-29 04:56:14,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 30573 states and 44551 transitions. [2020-10-29 04:56:14,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 04:56:14,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:14,291 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:14,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:56:14,292 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:14,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:14,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1921514601, now seen corresponding path program 1 times [2020-10-29 04:56:14,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:14,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684045000] [2020-10-29 04:56:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:14,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:14,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:15,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:15,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:15,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:16,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:19,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:19,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:19,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 04:56:19,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 04:56:19,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:56:19,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:19,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:56:19,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 04:56:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:19,616 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:19,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:19,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:19,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:19,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:19,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:56:19,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:19,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:56:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:19,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:19,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:19,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:19,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:19,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 04:56:19,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:19,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:19,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:19,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:19,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:56:19,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:56:19,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:56:19,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:19,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:19,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 04:56:19,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:19,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:56:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:19,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:19,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:19,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:19,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:56:19,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:56:19,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 04:56:19,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:19,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:19,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 04:56:19,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 04:56:19,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:19,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:56:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:19,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:19,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:56:19,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:19,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 04:56:19,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:19,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:56:19,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:19,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 04:56:20,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684045000] [2020-10-29 04:56:20,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:20,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:56:20,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730664492] [2020-10-29 04:56:20,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:56:20,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:20,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:56:20,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:56:20,044 INFO L87 Difference]: Start difference. First operand 30573 states and 44551 transitions. Second operand 6 states. [2020-10-29 04:56:20,281 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:22,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:22,317 INFO L93 Difference]: Finished difference Result 54290 states and 78722 transitions. [2020-10-29 04:56:22,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:56:22,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 232 [2020-10-29 04:56:22,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:22,417 INFO L225 Difference]: With dead ends: 54290 [2020-10-29 04:56:22,418 INFO L226 Difference]: Without dead ends: 29930 [2020-10-29 04:56:22,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:22,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29930 states. [2020-10-29 04:56:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29930 to 29922. [2020-10-29 04:56:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29922 states. [2020-10-29 04:56:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29922 states to 29922 states and 43186 transitions. [2020-10-29 04:56:23,426 INFO L78 Accepts]: Start accepts. Automaton has 29922 states and 43186 transitions. Word has length 232 [2020-10-29 04:56:23,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:23,426 INFO L481 AbstractCegarLoop]: Abstraction has 29922 states and 43186 transitions. [2020-10-29 04:56:23,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:56:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 29922 states and 43186 transitions. [2020-10-29 04:56:23,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 04:56:23,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:23,497 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:23,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:56:23,497 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:23,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:23,498 INFO L82 PathProgramCache]: Analyzing trace with hash -136111339, now seen corresponding path program 1 times [2020-10-29 04:56:23,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:23,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745384307] [2020-10-29 04:56:23,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:23,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:23,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:23,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:23,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:28,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:28,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 04:56:28,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:56:28,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:56:28,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:28,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:56:28,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 04:56:28,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:56:28,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:28,826 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:28,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:28,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:28,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:28,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:28,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:56:28,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:28,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:28,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:28,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:28,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:28,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:28,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:28,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:56:28,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:28,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:28,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:28,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:28,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:28,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:28,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:28,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:56:28,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:56:28,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:28,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:28,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:28,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:28,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:56:28,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:28,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 04:56:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:29,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:29,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:29,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:56:29,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:29,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:56:29,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:29,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:29,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:29,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:56:29,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 04:56:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:29,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:29,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:29,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:56:29,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:29,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 04:56:29,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:29,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:29,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:56:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 04:56:29,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745384307] [2020-10-29 04:56:29,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:29,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:29,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43328381] [2020-10-29 04:56:29,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:29,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:29,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:29,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:29,231 INFO L87 Difference]: Start difference. First operand 29922 states and 43186 transitions. Second operand 7 states. [2020-10-29 04:56:29,758 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:30,504 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:56:36,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:36,696 INFO L93 Difference]: Finished difference Result 116503 states and 192165 transitions. [2020-10-29 04:56:36,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:56:36,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-29 04:56:36,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:37,169 INFO L225 Difference]: With dead ends: 116503 [2020-10-29 04:56:37,169 INFO L226 Difference]: Without dead ends: 87493 [2020-10-29 04:56:37,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:56:37,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87493 states. [2020-10-29 04:56:40,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87493 to 84043. [2020-10-29 04:56:40,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84043 states. [2020-10-29 04:56:41,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84043 states to 84043 states and 126315 transitions. [2020-10-29 04:56:41,051 INFO L78 Accepts]: Start accepts. Automaton has 84043 states and 126315 transitions. Word has length 232 [2020-10-29 04:56:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:41,052 INFO L481 AbstractCegarLoop]: Abstraction has 84043 states and 126315 transitions. [2020-10-29 04:56:41,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 84043 states and 126315 transitions. [2020-10-29 04:56:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-29 04:56:41,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:41,307 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:41,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:56:41,307 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:41,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:41,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1533445456, now seen corresponding path program 1 times [2020-10-29 04:56:41,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:41,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946619191] [2020-10-29 04:56:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:41,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:41,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:45,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:45,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 04:56:45,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:56:45,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4049 [2020-10-29 04:56:45,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:45,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:56:45,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:56:45,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 04:56:45,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:45,683 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:45,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:45,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:45,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:45,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:45,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:45,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:56:45,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:45,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:45,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:45,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:45,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:45,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:45,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:56:45,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 04:56:45,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:45,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:45,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:56:45,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:56:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:45,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:45,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:45,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:56:45,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:45,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 04:56:45,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:45,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:45,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:56:45,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:56:45,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 04:56:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:46,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:46,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:46,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:56:46,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 04:56:46,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:46,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:56:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:56:46,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946619191] [2020-10-29 04:56:46,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:46,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:56:46,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267088385] [2020-10-29 04:56:46,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:56:46,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:46,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:56:46,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:56:46,211 INFO L87 Difference]: Start difference. First operand 84043 states and 126315 transitions. Second operand 10 states. [2020-10-29 04:56:46,500 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:47,264 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-29 04:56:47,721 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:56:49,880 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 04:56:51,539 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-29 04:56:54,403 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:57,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:57,213 INFO L93 Difference]: Finished difference Result 213310 states and 369639 transitions. [2020-10-29 04:56:57,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 04:56:57,214 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 235 [2020-10-29 04:56:57,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:58,437 INFO L225 Difference]: With dead ends: 213310 [2020-10-29 04:56:58,437 INFO L226 Difference]: Without dead ends: 129486 [2020-10-29 04:56:58,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2020-10-29 04:56:58,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129486 states. [2020-10-29 04:57:03,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129486 to 122018. [2020-10-29 04:57:03,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122018 states. [2020-10-29 04:57:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122018 states to 122018 states and 180709 transitions. [2020-10-29 04:57:04,632 INFO L78 Accepts]: Start accepts. Automaton has 122018 states and 180709 transitions. Word has length 235 [2020-10-29 04:57:04,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:04,632 INFO L481 AbstractCegarLoop]: Abstraction has 122018 states and 180709 transitions. [2020-10-29 04:57:04,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:57:04,633 INFO L276 IsEmpty]: Start isEmpty. Operand 122018 states and 180709 transitions. [2020-10-29 04:57:04,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 04:57:04,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:04,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:04,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:57:04,747 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:04,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:04,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1930488644, now seen corresponding path program 1 times [2020-10-29 04:57:04,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:04,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617818709] [2020-10-29 04:57:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:04,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:05,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:07,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:08,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:09,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:09,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 04:57:09,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:57:09,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 04:57:09,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:09,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:57:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-29 04:57:09,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 04:57:09,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:10,190 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:10,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:10,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:10,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:10,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:10,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:10,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:57:10,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:10,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:10,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:10,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:10,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:10,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:10,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:10,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:57:10,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:10,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 04:57:10,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:10,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:10,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:10,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:10,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:10,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:10,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:57:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:10,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:10,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:10,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-29 04:57:10,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:57:10,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:10,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:10,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 04:57:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:10,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 04:57:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:10,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:10,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:10,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 04:57:10,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:10,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 04:57:10,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:10,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:57:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 89 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 04:57:10,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617818709] [2020-10-29 04:57:10,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:10,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 04:57:10,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785283288] [2020-10-29 04:57:10,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 04:57:10,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:10,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 04:57:10,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:57:10,712 INFO L87 Difference]: Start difference. First operand 122018 states and 180709 transitions. Second operand 6 states. [2020-10-29 04:57:11,131 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:16,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:16,431 INFO L93 Difference]: Finished difference Result 230189 states and 344658 transitions. [2020-10-29 04:57:16,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:57:16,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 245 [2020-10-29 04:57:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:17,066 INFO L225 Difference]: With dead ends: 230189 [2020-10-29 04:57:17,067 INFO L226 Difference]: Without dead ends: 110739 [2020-10-29 04:57:17,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:57:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110739 states. [2020-10-29 04:57:20,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110739 to 110229. [2020-10-29 04:57:20,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110229 states. [2020-10-29 04:57:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110229 states to 110229 states and 146999 transitions. [2020-10-29 04:57:20,403 INFO L78 Accepts]: Start accepts. Automaton has 110229 states and 146999 transitions. Word has length 245 [2020-10-29 04:57:20,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:20,403 INFO L481 AbstractCegarLoop]: Abstraction has 110229 states and 146999 transitions. [2020-10-29 04:57:20,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 04:57:20,403 INFO L276 IsEmpty]: Start isEmpty. Operand 110229 states and 146999 transitions. [2020-10-29 04:57:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-29 04:57:20,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:20,764 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:20,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:57:20,765 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:20,765 INFO L82 PathProgramCache]: Analyzing trace with hash -436714155, now seen corresponding path program 1 times [2020-10-29 04:57:20,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:20,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423091646] [2020-10-29 04:57:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:20,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:20,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:21,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:24,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:24,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-29 04:57:24,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:57:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3875 [2020-10-29 04:57:24,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:24,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:57:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 04:57:24,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:24,980 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:24,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:24,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:24,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:24,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:24,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:24,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:57:24,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:24,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:24,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:24,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:24,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:24,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:25,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:25,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:25,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:57:25,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:25,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:57:25,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:25,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:25,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:25,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:57:25,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:25,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:57:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:25,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:25,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:25,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 04:57:25,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 04:57:25,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:25,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 04:57:25,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:25,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 04:57:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:25,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:25,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:57:25,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:25,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:57:25,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:25,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:57:25,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:25,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 86 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 04:57:25,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423091646] [2020-10-29 04:57:25,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:25,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:57:25,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157198094] [2020-10-29 04:57:25,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:57:25,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:25,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:57:25,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:57:25,392 INFO L87 Difference]: Start difference. First operand 110229 states and 146999 transitions. Second operand 7 states. [2020-10-29 04:57:25,688 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:57:26,131 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:57:31,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:31,051 INFO L93 Difference]: Finished difference Result 215498 states and 288129 transitions. [2020-10-29 04:57:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:57:31,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-29 04:57:31,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:31,637 INFO L225 Difference]: With dead ends: 215498 [2020-10-29 04:57:31,638 INFO L226 Difference]: Without dead ends: 110503 [2020-10-29 04:57:31,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:57:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110503 states. [2020-10-29 04:57:34,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110503 to 110283. [2020-10-29 04:57:34,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110283 states. [2020-10-29 04:57:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110283 states to 110283 states and 139471 transitions. [2020-10-29 04:57:34,453 INFO L78 Accepts]: Start accepts. Automaton has 110283 states and 139471 transitions. Word has length 261 [2020-10-29 04:57:34,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:34,453 INFO L481 AbstractCegarLoop]: Abstraction has 110283 states and 139471 transitions. [2020-10-29 04:57:34,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:57:34,453 INFO L276 IsEmpty]: Start isEmpty. Operand 110283 states and 139471 transitions. [2020-10-29 04:57:34,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-29 04:57:34,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:34,888 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:34,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:57:34,901 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:34,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:34,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1706135241, now seen corresponding path program 1 times [2020-10-29 04:57:34,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:34,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565431751] [2020-10-29 04:57:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:35,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:35,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:36,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:36,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-29 04:57:36,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:57:36,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1708 [2020-10-29 04:57:36,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:36,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:36,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:36,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:57:36,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 04:57:36,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:36,963 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:36,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:36,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:36,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:36,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:36,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:57:36,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:36,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:36,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:36,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:36,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:36,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:37,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:37,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:37,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:57:37,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:37,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:57:37,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:37,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:57:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:37,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:57:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:37,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:37,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:37,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 04:57:37,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:37,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 04:57:37,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:37,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:37,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 04:57:37,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 04:57:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:37,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:37,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:37,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:57:37,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:57:37,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:37,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:57:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 92 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 04:57:37,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565431751] [2020-10-29 04:57:37,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:37,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:57:37,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159892232] [2020-10-29 04:57:37,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:57:37,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:37,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:57:37,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:57:37,485 INFO L87 Difference]: Start difference. First operand 110283 states and 139471 transitions. Second operand 7 states. [2020-10-29 04:57:37,737 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:57:38,175 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-29 04:57:42,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:42,829 INFO L93 Difference]: Finished difference Result 229135 states and 289356 transitions. [2020-10-29 04:57:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:57:42,830 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-10-29 04:57:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:43,188 INFO L225 Difference]: With dead ends: 229135 [2020-10-29 04:57:43,188 INFO L226 Difference]: Without dead ends: 125159 [2020-10-29 04:57:43,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:57:43,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125159 states. [2020-10-29 04:57:46,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125159 to 125071. [2020-10-29 04:57:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125071 states. [2020-10-29 04:57:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125071 states to 125071 states and 157482 transitions. [2020-10-29 04:57:46,762 INFO L78 Accepts]: Start accepts. Automaton has 125071 states and 157482 transitions. Word has length 267 [2020-10-29 04:57:46,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:46,763 INFO L481 AbstractCegarLoop]: Abstraction has 125071 states and 157482 transitions. [2020-10-29 04:57:46,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:57:46,763 INFO L276 IsEmpty]: Start isEmpty. Operand 125071 states and 157482 transitions. [2020-10-29 04:57:46,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-29 04:57:46,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:46,850 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:46,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:57:46,851 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:46,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:46,851 INFO L82 PathProgramCache]: Analyzing trace with hash -39191286, now seen corresponding path program 1 times [2020-10-29 04:57:46,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:46,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229652377] [2020-10-29 04:57:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:46,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:46,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:47,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:48,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:48,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:51,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:51,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-29 04:57:51,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 04:57:51,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 04:57:51,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:51,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:51,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:57:51,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:57:51,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 04:57:51,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:52,170 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:52,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:52,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:52,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:52,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:52,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:52,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:57:52,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:52,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:52,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:52,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:52,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:52,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:52,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:52,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:52,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:57:52,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:52,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:57:52,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:52,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:52,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:57:52,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:52,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:57:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:52,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:52,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:52,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:52,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:57:52,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:57:52,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:57:52,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:52,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:57:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:52,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:57:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:52,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:52,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 04:57:52,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:52,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 04:57:52,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:52,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:52,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 04:57:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:52,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-29 04:57:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:52,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:52,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:52,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:57:52,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:52,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 04:57:52,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:52,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 04:57:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:52,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 111 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-29 04:57:52,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229652377] [2020-10-29 04:57:52,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:52,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 04:57:52,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892896220] [2020-10-29 04:57:52,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 04:57:52,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:52,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 04:57:52,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-29 04:57:52,660 INFO L87 Difference]: Start difference. First operand 125071 states and 157482 transitions. Second operand 9 states. [2020-10-29 04:57:53,096 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:57:53,473 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:55,254 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:58:02,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:02,249 INFO L93 Difference]: Finished difference Result 282485 states and 378189 transitions. [2020-10-29 04:58:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 04:58:02,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 272 [2020-10-29 04:58:02,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:02,802 INFO L225 Difference]: With dead ends: 282485 [2020-10-29 04:58:02,803 INFO L226 Difference]: Without dead ends: 157655 [2020-10-29 04:58:03,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-29 04:58:03,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157655 states. [2020-10-29 04:58:06,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157655 to 150357. [2020-10-29 04:58:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150357 states. [2020-10-29 04:58:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150357 states to 150357 states and 174423 transitions. [2020-10-29 04:58:07,220 INFO L78 Accepts]: Start accepts. Automaton has 150357 states and 174423 transitions. Word has length 272 [2020-10-29 04:58:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:07,221 INFO L481 AbstractCegarLoop]: Abstraction has 150357 states and 174423 transitions. [2020-10-29 04:58:07,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 04:58:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 150357 states and 174423 transitions. [2020-10-29 04:58:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-29 04:58:07,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:07,269 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:07,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:58:07,270 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:07,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:07,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1951224532, now seen corresponding path program 1 times [2020-10-29 04:58:07,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:07,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260908155] [2020-10-29 04:58:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:07,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:07,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:09,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:11,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:12,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:12,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-29 04:58:12,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:58:12,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 04:58:12,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:12,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 04:58:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:58:12,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 04:58:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:12,697 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:12,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:12,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:12,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:12,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:12,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:12,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 04:58:12,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:12,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:12,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:12,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:12,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:12,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:58:12,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:12,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 04:58:12,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:12,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:58:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:12,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:58:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:12,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:12,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:12,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:58:12,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:12,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 04:58:12,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:12,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:58:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:12,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:58:12,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:12,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 04:58:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:12,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:13,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:13,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:58:13,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:13,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 04:58:13,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:13,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 04:58:13,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:13,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-29 04:58:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:13,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:13,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:13,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:58:13,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:13,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 04:58:13,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:13,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 04:58:13,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 147 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-29 04:58:13,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260908155] [2020-10-29 04:58:13,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:13,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:58:13,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526276586] [2020-10-29 04:58:13,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:58:13,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:13,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:58:13,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:58:13,325 INFO L87 Difference]: Start difference. First operand 150357 states and 174423 transitions. Second operand 10 states. [2020-10-29 04:58:13,585 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:58:14,413 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 162 [2020-10-29 04:58:15,971 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:58:16,208 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 162