/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:29:45,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:29:45,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:29:45,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:29:45,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:29:45,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:29:45,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:29:45,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:29:45,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:29:45,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:29:45,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:29:45,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:29:45,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:29:45,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:29:45,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:29:45,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:29:45,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:29:45,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:29:45,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:29:45,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:29:45,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:29:45,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:29:45,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:29:45,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:29:45,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:29:45,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:29:45,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:29:45,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:29:45,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:29:45,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:29:45,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:29:45,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:29:45,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:29:45,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:29:45,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:29:45,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:29:45,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:29:45,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:29:45,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:29:45,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:29:45,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:29:45,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 00:29:45,452 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:29:45,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:29:45,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:29:45,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:29:45,454 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:29:45,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:29:45,456 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:29:45,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:29:45,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:29:45,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:29:45,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:29:45,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:29:45,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:29:45,458 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:29:45,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:29:45,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:29:45,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:29:45,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:29:45,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:29:45,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:29:45,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:29:45,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:29:45,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:29:45,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:29:45,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:29:45,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:29:45,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:29:45,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:29:45,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:29:45,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:29:45,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:29:45,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:29:45,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:29:45,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:29:45,975 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:29:45,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label33.c [2020-10-27 00:29:46,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f86d57b19/714560bc895d453ba336355dbd377ad8/FLAG0ca52f2bd [2020-10-27 00:29:47,114 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:29:47,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label33.c [2020-10-27 00:29:47,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f86d57b19/714560bc895d453ba336355dbd377ad8/FLAG0ca52f2bd [2020-10-27 00:29:47,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f86d57b19/714560bc895d453ba336355dbd377ad8 [2020-10-27 00:29:47,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:29:47,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:29:47,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:29:47,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:29:47,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:29:47,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:29:47" (1/1) ... [2020-10-27 00:29:47,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b4610a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:47, skipping insertion in model container [2020-10-27 00:29:47,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:29:47" (1/1) ... [2020-10-27 00:29:47,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:29:47,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:29:48,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:29:48,958 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:29:49,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:29:49,623 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:29:49,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:49 WrapperNode [2020-10-27 00:29:49,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:29:49,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:29:49,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:29:49,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:29:49,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:49" (1/1) ... [2020-10-27 00:29:49,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:49" (1/1) ... [2020-10-27 00:29:49,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:49" (1/1) ... [2020-10-27 00:29:49,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:49" (1/1) ... [2020-10-27 00:29:49,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:49" (1/1) ... [2020-10-27 00:29:49,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:49" (1/1) ... [2020-10-27 00:29:49,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:49" (1/1) ... [2020-10-27 00:29:49,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:29:49,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:29:49,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:29:49,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:29:49,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:29:50,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:29:50,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:29:50,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:29:50,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:29:50,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:29:50,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:29:50,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:29:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:29:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:29:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:29:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:29:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:29:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:29:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:29:50,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:29:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:29:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:29:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:29:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:29:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:29:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:29:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:29:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:29:55,831 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:29:55,832 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:29:55,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:29:55 BoogieIcfgContainer [2020-10-27 00:29:55,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:29:55,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:29:55,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:29:55,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:29:55,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:29:47" (1/3) ... [2020-10-27 00:29:55,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a88f303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:29:55, skipping insertion in model container [2020-10-27 00:29:55,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:29:49" (2/3) ... [2020-10-27 00:29:55,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a88f303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:29:55, skipping insertion in model container [2020-10-27 00:29:55,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:29:55" (3/3) ... [2020-10-27 00:29:55,849 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label33.c [2020-10-27 00:29:55,864 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:29:55,870 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:29:55,883 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:29:55,920 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:29:55,920 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:29:55,920 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:29:55,921 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:29:55,921 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:29:55,921 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:29:55,921 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:29:55,921 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:29:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:29:55,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 00:29:55,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:55,967 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] [2020-10-27 00:29:55,968 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:56,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:56,006 INFO L82 PathProgramCache]: Analyzing trace with hash 623498496, now seen corresponding path program 1 times [2020-10-27 00:29:56,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:56,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111467042] [2020-10-27 00:29:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:56,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:56,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 00:29:56,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-10-27 00:29:56,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:29:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:29:56,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 00:29:56,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:29:57,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:57,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:57,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:57,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:29:57,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:29:57,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:29:57,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111467042] [2020-10-27 00:29:57,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:29:57,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 00:29:57,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108504335] [2020-10-27 00:29:57,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:29:57,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:57,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:29:57,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:29:57,319 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-27 00:29:57,493 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:30:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:17,547 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-27 00:30:17,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 00:30:17,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-27 00:30:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:17,595 INFO L225 Difference]: With dead ends: 2989 [2020-10-27 00:30:17,596 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 00:30:17,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 00:30:17,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-27 00:30:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-27 00:30:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-27 00:30:17,807 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 30 [2020-10-27 00:30:17,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:17,808 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-27 00:30:17,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:30:17,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-27 00:30:17,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 00:30:17,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:17,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:17,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:30:17,814 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:17,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:17,815 INFO L82 PathProgramCache]: Analyzing trace with hash -474369286, now seen corresponding path program 1 times [2020-10-27 00:30:17,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:17,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504245441] [2020-10-27 00:30:17,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:17,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:18,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:18,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 00:30:18,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:18,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-27 00:30:18,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:18,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:30:18,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:18,881 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:30:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:18,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:18,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:18,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:18,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:18,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:30:18,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:18,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:18,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:18,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:18,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:18,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:19,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:19,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:19,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:30:19,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:19,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 00:30:19,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:19,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:19,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:19,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 00:30:19,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:19,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504245441] [2020-10-27 00:30:19,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:19,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:30:19,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627588352] [2020-10-27 00:30:19,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:30:19,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:19,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:30:19,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:30:19,283 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 8 states. [2020-10-27 00:30:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:35,873 INFO L93 Difference]: Finished difference Result 5047 states and 8287 transitions. [2020-10-27 00:30:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:30:35,880 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-27 00:30:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:35,900 INFO L225 Difference]: With dead ends: 5047 [2020-10-27 00:30:35,900 INFO L226 Difference]: Without dead ends: 2917 [2020-10-27 00:30:35,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:35,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2020-10-27 00:30:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2880. [2020-10-27 00:30:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2020-10-27 00:30:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4329 transitions. [2020-10-27 00:30:36,022 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4329 transitions. Word has length 101 [2020-10-27 00:30:36,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:36,023 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 4329 transitions. [2020-10-27 00:30:36,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:30:36,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4329 transitions. [2020-10-27 00:30:36,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-27 00:30:36,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:36,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:36,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:30:36,030 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:36,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:36,031 INFO L82 PathProgramCache]: Analyzing trace with hash 322341160, now seen corresponding path program 1 times [2020-10-27 00:30:36,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:36,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279954121] [2020-10-27 00:30:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:36,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:36,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:37,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:38,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:38,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-27 00:30:38,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:30:38,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1957 [2020-10-27 00:30:38,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:38,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-27 00:30:38,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:38,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:38,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:38,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:38,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:38,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:38,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 00:30:38,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:38,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:38,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:38,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:30:38,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:38,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:38,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:38,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 00:30:38,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:38,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-27 00:30:38,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:38,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 00:30:38,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:30:38,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279954121] [2020-10-27 00:30:38,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:30:38,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:30:38,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418102997] [2020-10-27 00:30:38,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:38,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:38,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:38,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:38,758 INFO L87 Difference]: Start difference. First operand 2880 states and 4329 transitions. Second operand 7 states. [2020-10-27 00:30:38,903 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:30:44,722 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:30:55,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:55,762 INFO L93 Difference]: Finished difference Result 8831 states and 13447 transitions. [2020-10-27 00:30:55,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:30:55,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-27 00:30:55,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:55,797 INFO L225 Difference]: With dead ends: 8831 [2020-10-27 00:30:55,797 INFO L226 Difference]: Without dead ends: 5957 [2020-10-27 00:30:55,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:30:55,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5957 states. [2020-10-27 00:30:55,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5957 to 5116. [2020-10-27 00:30:55,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5116 states. [2020-10-27 00:30:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5116 states to 5116 states and 6870 transitions. [2020-10-27 00:30:55,967 INFO L78 Accepts]: Start accepts. Automaton has 5116 states and 6870 transitions. Word has length 180 [2020-10-27 00:30:55,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:55,968 INFO L481 AbstractCegarLoop]: Abstraction has 5116 states and 6870 transitions. [2020-10-27 00:30:55,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:30:55,969 INFO L276 IsEmpty]: Start isEmpty. Operand 5116 states and 6870 transitions. [2020-10-27 00:30:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-27 00:30:55,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:55,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:55,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:30:55,973 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:55,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:55,974 INFO L82 PathProgramCache]: Analyzing trace with hash 965356250, now seen corresponding path program 1 times [2020-10-27 00:30:55,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:55,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351704741] [2020-10-27 00:30:55,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:56,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:56,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:56,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-27 00:30:56,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:30:56,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-10-27 00:30:56,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:56,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:30:56,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:30:56,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:30:56,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:57,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:57,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:57,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:57,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:57,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:57,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:30:57,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:57,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:57,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:57,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:30:57,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:57,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:57,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:57,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:57,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:30:57,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:57,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 00:30:57,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:57,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:30:57,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:57,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 00:30:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:57,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:57,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:57,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:30:57,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:57,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:30:57,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:57,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 00:30:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:57,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:57,508 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 44 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:30:57,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351704741] [2020-10-27 00:30:57,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:57,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:57,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103052992] [2020-10-27 00:30:57,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:57,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:57,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:57,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:57,511 INFO L87 Difference]: Start difference. First operand 5116 states and 6870 transitions. Second operand 7 states. [2020-10-27 00:30:57,670 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:30:59,755 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:31:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:13,395 INFO L93 Difference]: Finished difference Result 11325 states and 15711 transitions. [2020-10-27 00:31:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:13,397 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2020-10-27 00:31:13,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:13,436 INFO L225 Difference]: With dead ends: 11325 [2020-10-27 00:31:13,436 INFO L226 Difference]: Without dead ends: 6215 [2020-10-27 00:31:13,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:31:13,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2020-10-27 00:31:13,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 5865. [2020-10-27 00:31:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5865 states. [2020-10-27 00:31:13,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5865 states to 5865 states and 7683 transitions. [2020-10-27 00:31:13,677 INFO L78 Accepts]: Start accepts. Automaton has 5865 states and 7683 transitions. Word has length 191 [2020-10-27 00:31:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:13,679 INFO L481 AbstractCegarLoop]: Abstraction has 5865 states and 7683 transitions. [2020-10-27 00:31:13,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:13,680 INFO L276 IsEmpty]: Start isEmpty. Operand 5865 states and 7683 transitions. [2020-10-27 00:31:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-27 00:31:13,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:13,685 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:13,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:31:13,686 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:13,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:13,686 INFO L82 PathProgramCache]: Analyzing trace with hash -633390984, now seen corresponding path program 1 times [2020-10-27 00:31:13,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:13,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181824611] [2020-10-27 00:31:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:13,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:16,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:16,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 00:31:16,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:31:16,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3139 [2020-10-27 00:31:16,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:31:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:31:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:31:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:17,123 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:31:17,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:17,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:17,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:17,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:17,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:31:17,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:17,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:17,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:31:17,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:31:17,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:17,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:17,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:17,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:31:17,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:17,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-27 00:31:17,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:31:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:17,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 00:31:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:17,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:17,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 00:31:17,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:17,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:31:17,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 00:31:17,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:17,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 44 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 00:31:17,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181824611] [2020-10-27 00:31:17,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:17,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:31:17,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119298447] [2020-10-27 00:31:17,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:31:17,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:17,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:31:17,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:31:17,822 INFO L87 Difference]: Start difference. First operand 5865 states and 7683 transitions. Second operand 8 states. [2020-10-27 00:31:17,991 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 00:31:30,946 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:31:34,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:34,972 INFO L93 Difference]: Finished difference Result 15503 states and 20851 transitions. [2020-10-27 00:31:34,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:31:34,974 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 246 [2020-10-27 00:31:34,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:35,031 INFO L225 Difference]: With dead ends: 15503 [2020-10-27 00:31:35,031 INFO L226 Difference]: Without dead ends: 10346 [2020-10-27 00:31:35,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:31:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10346 states. [2020-10-27 00:31:35,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10346 to 9509. [2020-10-27 00:31:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9509 states. [2020-10-27 00:31:35,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 11827 transitions. [2020-10-27 00:31:35,311 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 11827 transitions. Word has length 246 [2020-10-27 00:31:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:35,311 INFO L481 AbstractCegarLoop]: Abstraction has 9509 states and 11827 transitions. [2020-10-27 00:31:35,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:31:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 11827 transitions. [2020-10-27 00:31:35,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-27 00:31:35,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:35,322 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:35,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:31:35,323 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:35,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:35,323 INFO L82 PathProgramCache]: Analyzing trace with hash -770740264, now seen corresponding path program 1 times [2020-10-27 00:31:35,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:35,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921753466] [2020-10-27 00:31:35,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:36,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:39,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:39,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-10-27 00:31:39,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:31:39,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4479 [2020-10-27 00:31:39,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:39,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:31:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 00:31:39,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:40,083 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:31:40,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:31:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:40,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:31:40,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:40,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:31:40,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:40,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:40,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:31:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:40,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:31:40,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:40,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-27 00:31:40,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:31:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:31:40,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:31:40,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:40,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:31:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:40,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:31:40,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:40,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 00:31:40,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:31:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:31:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:31:40,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:40,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-27 00:31:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:40,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:40,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:31:40,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 00:31:40,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:31:40,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 00:31:40,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:31:40,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:31:40,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 00:31:40,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:31:40,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:31:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 189 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-27 00:31:41,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921753466] [2020-10-27 00:31:41,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:31:41,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:31:41,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133453730] [2020-10-27 00:31:41,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:31:41,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:31:41,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:31:41,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:31:41,032 INFO L87 Difference]: Start difference. First operand 9509 states and 11827 transitions. Second operand 7 states. [2020-10-27 00:31:42,517 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:31:48,071 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:31:59,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:31:59,017 INFO L93 Difference]: Finished difference Result 21345 states and 26971 transitions. [2020-10-27 00:31:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:31:59,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 432 [2020-10-27 00:31:59,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:31:59,052 INFO L225 Difference]: With dead ends: 21345 [2020-10-27 00:31:59,052 INFO L226 Difference]: Without dead ends: 10324 [2020-10-27 00:31:59,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:31:59,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10324 states. [2020-10-27 00:31:59,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10324 to 10255. [2020-10-27 00:31:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10255 states. [2020-10-27 00:31:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10255 states to 10255 states and 11578 transitions. [2020-10-27 00:31:59,314 INFO L78 Accepts]: Start accepts. Automaton has 10255 states and 11578 transitions. Word has length 432 [2020-10-27 00:31:59,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:31:59,315 INFO L481 AbstractCegarLoop]: Abstraction has 10255 states and 11578 transitions. [2020-10-27 00:31:59,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:31:59,316 INFO L276 IsEmpty]: Start isEmpty. Operand 10255 states and 11578 transitions. [2020-10-27 00:31:59,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-10-27 00:31:59,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:31:59,327 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:31:59,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:31:59,328 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:31:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:31:59,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1713965964, now seen corresponding path program 1 times [2020-10-27 00:31:59,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:31:59,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198778450] [2020-10-27 00:31:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:31:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:31:59,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:59,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:31:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:01,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:04,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:04,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-27 00:32:04,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:32:04,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 00:32:04,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:04,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:32:04,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:32:04,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-27 00:32:04,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:04,695 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:32:04,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:04,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:04,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:04,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:04,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:04,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:32:04,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:04,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:32:04,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:04,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:04,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:05,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 643 [2020-10-27 00:32:05,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:32:05,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:05,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 00:32:05,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:32:05,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:05,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 00:32:05,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 00:32:05,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:05,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 00:32:05,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-27 00:32:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:05,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:05,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:32:05,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:05,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 00:32:05,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:05,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 00:32:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:05,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:05,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-27 00:32:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:05,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:06,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:06,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:32:06,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:06,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 00:32:06,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:32:06,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:06,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 66 proven. 152 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-27 00:32:06,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198778450] [2020-10-27 00:32:06,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:06,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:06,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235905424] [2020-10-27 00:32:06,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:06,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:06,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:06,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:06,377 INFO L87 Difference]: Start difference. First operand 10255 states and 11578 transitions. Second operand 7 states. [2020-10-27 00:32:06,536 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:32:13,330 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 00:32:19,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:19,359 INFO L93 Difference]: Finished difference Result 27901 states and 32236 transitions. [2020-10-27 00:32:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:32:19,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 499 [2020-10-27 00:32:19,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:19,424 INFO L225 Difference]: With dead ends: 27901 [2020-10-27 00:32:19,424 INFO L226 Difference]: Without dead ends: 18354 [2020-10-27 00:32:19,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:19,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18354 states. [2020-10-27 00:32:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18354 to 17547. [2020-10-27 00:32:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17547 states. [2020-10-27 00:32:19,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17547 states to 17547 states and 19681 transitions. [2020-10-27 00:32:19,813 INFO L78 Accepts]: Start accepts. Automaton has 17547 states and 19681 transitions. Word has length 499 [2020-10-27 00:32:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:19,814 INFO L481 AbstractCegarLoop]: Abstraction has 17547 states and 19681 transitions. [2020-10-27 00:32:19,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 17547 states and 19681 transitions. [2020-10-27 00:32:19,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2020-10-27 00:32:19,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:19,866 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:19,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:32:19,867 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:19,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:19,868 INFO L82 PathProgramCache]: Analyzing trace with hash -581727978, now seen corresponding path program 1 times [2020-10-27 00:32:19,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:19,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77512450] [2020-10-27 00:32:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:20,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:21,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:21,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:25,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:25,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1050 [2020-10-27 00:32:25,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:32:25,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 00:32:25,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:32:25,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:32:25,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:25,478 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:32:25,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:25,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:25,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:25,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:25,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:25,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:32:25,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:25,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:25,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:25,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:25,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:25,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:25,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-27 00:32:25,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:25,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:25,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:32:25,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:25,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:26,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:26,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:26,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:26,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 00:32:26,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:26,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:26,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:26,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:26,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:26,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:32:26,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:26,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:26,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:26,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:26,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:26,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:26,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:26,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:26,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:26,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:26,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-27 00:32:26,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:26,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:32:26,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:26,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:26,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:26,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:26,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:26,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:26,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:32:26,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:26,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:32:26,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:27,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:27,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:27,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:32:27,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:32:27,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:27,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:32:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:27,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2020-10-27 00:32:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:27,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:27,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:27,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:32:27,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:27,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 00:32:27,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:27,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:32:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:27,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 278 proven. 71 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-10-27 00:32:27,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77512450] [2020-10-27 00:32:27,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:27,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:28,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064614830] [2020-10-27 00:32:28,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:28,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:28,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:28,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:28,005 INFO L87 Difference]: Start difference. First operand 17547 states and 19681 transitions. Second operand 7 states. [2020-10-27 00:32:28,157 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:32:33,918 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:32:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:32:40,183 INFO L93 Difference]: Finished difference Result 42434 states and 49138 transitions. [2020-10-27 00:32:40,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:32:40,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1026 [2020-10-27 00:32:40,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:32:40,253 INFO L225 Difference]: With dead ends: 42434 [2020-10-27 00:32:40,253 INFO L226 Difference]: Without dead ends: 26305 [2020-10-27 00:32:40,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:32:40,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26305 states. [2020-10-27 00:32:40,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26305 to 25519. [2020-10-27 00:32:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25519 states. [2020-10-27 00:32:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25519 states to 25519 states and 29149 transitions. [2020-10-27 00:32:40,879 INFO L78 Accepts]: Start accepts. Automaton has 25519 states and 29149 transitions. Word has length 1026 [2020-10-27 00:32:40,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:32:40,881 INFO L481 AbstractCegarLoop]: Abstraction has 25519 states and 29149 transitions. [2020-10-27 00:32:40,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:32:40,881 INFO L276 IsEmpty]: Start isEmpty. Operand 25519 states and 29149 transitions. [2020-10-27 00:32:40,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1210 [2020-10-27 00:32:40,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:32:40,907 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:32:40,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:32:40,907 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:32:40,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:32:40,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1802448584, now seen corresponding path program 1 times [2020-10-27 00:32:40,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:32:40,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123984203] [2020-10-27 00:32:40,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:32:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:41,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:41,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:42,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:46,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:46,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1233 [2020-10-27 00:32:46,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:32:46,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-27 00:32:46,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:46,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:46,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:32:46,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:32:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:46,584 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:32:46,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:32:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:46,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:46,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:46,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:32:46,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:46,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:46,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:46,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:46,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:46,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:32:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:46,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:46,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:32:46,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-27 00:32:46,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:46,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:46,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:46,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:46,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:46,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:32:46,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:46,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 00:32:46,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:46,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:46,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:46,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:47,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:32:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:47,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:47,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:32:47,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:47,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:32:47,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:47,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:47,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:32:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:47,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:47,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:47,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:32:47,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:47,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 00:32:47,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:47,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:32:47,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:47,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:32:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:47,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:47,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:47,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:32:47,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:47,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:32:47,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:32:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:32:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:32:47,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:32:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:47,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:47,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:32:47,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:47,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:32:47,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:47,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:32:47,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:32:47,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:32:47,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:47,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-27 00:32:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:32:47,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:32:47,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:32:47,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:32:47,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:32:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 00:32:47,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:32:47,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:32:47,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 221 [2020-10-27 00:32:47,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:32:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:32:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1207 backedges. 342 proven. 121 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2020-10-27 00:32:48,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123984203] [2020-10-27 00:32:48,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:32:48,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:32:48,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624591058] [2020-10-27 00:32:48,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:32:48,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:32:48,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:32:48,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:32:48,693 INFO L87 Difference]: Start difference. First operand 25519 states and 29149 transitions. Second operand 7 states. [2020-10-27 00:32:54,402 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-27 00:32:56,751 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-27 00:33:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:33:02,414 INFO L93 Difference]: Finished difference Result 53979 states and 61811 transitions. [2020-10-27 00:33:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:33:02,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1209 [2020-10-27 00:33:02,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:33:02,495 INFO L225 Difference]: With dead ends: 53979 [2020-10-27 00:33:02,496 INFO L226 Difference]: Without dead ends: 29878 [2020-10-27 00:33:02,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:33:02,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29878 states. [2020-10-27 00:33:03,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29878 to 29811. [2020-10-27 00:33:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29811 states. [2020-10-27 00:33:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29811 states to 29811 states and 33730 transitions. [2020-10-27 00:33:03,114 INFO L78 Accepts]: Start accepts. Automaton has 29811 states and 33730 transitions. Word has length 1209 [2020-10-27 00:33:03,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:33:03,115 INFO L481 AbstractCegarLoop]: Abstraction has 29811 states and 33730 transitions. [2020-10-27 00:33:03,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:33:03,115 INFO L276 IsEmpty]: Start isEmpty. Operand 29811 states and 33730 transitions. [2020-10-27 00:33:03,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1217 [2020-10-27 00:33:03,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:33:03,140 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:33:03,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:33:03,140 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:33:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:33:03,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1259484859, now seen corresponding path program 1 times [2020-10-27 00:33:03,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:33:03,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57305984] [2020-10-27 00:33:03,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:33:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:03,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:04,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:05,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:08,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:08,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1240 [2020-10-27 00:33:08,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:33:08,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 00:33:08,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-27 00:33:08,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:33:08,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:09,136 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:33:09,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:33:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:09,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:09,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:09,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:33:09,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:09,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:33:09,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:09,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:09,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:09,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:09,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:33:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:09,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:09,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:33:09,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:09,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 00:33:09,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:09,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:09,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:09,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:09,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:09,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:33:09,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:09,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:33:09,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:09,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:09,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:09,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:09,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:33:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:09,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:09,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:09,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:33:09,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:09,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:33:09,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:09,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:09,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:09,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:33:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:09,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:09,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:09,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-27 00:33:09,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:09,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-27 00:33:09,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:09,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-27 00:33:09,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:09,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:33:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:09,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:10,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:10,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 00:33:10,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:10,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:33:10,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:33:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:33:10,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 00:33:10,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:10,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-27 00:33:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:10,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:10,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:33:10,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:33:10,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:33:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:33:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:33:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:10,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-27 00:33:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:33:10,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:33:10,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:33:10,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:33:10,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:33:10,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:33:10,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:33:10,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:33:10,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 221 [2020-10-27 00:33:10,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:33:10,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:33:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 342 proven. 121 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2020-10-27 00:33:11,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57305984] [2020-10-27 00:33:11,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:33:11,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:33:11,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884980792] [2020-10-27 00:33:11,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:33:11,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:33:11,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:33:11,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:33:11,295 INFO L87 Difference]: Start difference. First operand 29811 states and 33730 transitions. Second operand 7 states. [2020-10-27 00:33:15,515 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 00:33:19,058 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 65