/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:13:14,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:13:14,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:13:14,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:13:14,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:13:14,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:13:14,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:13:14,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:13:14,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:13:14,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:13:14,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:13:14,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:13:14,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:13:14,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:13:14,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:13:14,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:13:14,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:13:14,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:13:14,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:13:14,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:13:14,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:13:14,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:13:14,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:13:14,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:13:14,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:13:14,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:13:14,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:13:14,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:13:14,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:13:14,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:13:14,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:13:14,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:13:14,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:13:14,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:13:14,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:13:14,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:13:14,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:13:14,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:13:14,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:13:14,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:13:14,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:13:14,478 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 [2020-10-14 04:13:14,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:13:14,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:13:14,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:13:14,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:13:14,517 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:13:14,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:13:14,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:13:14,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:13:14,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:13:14,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:13:14,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:13:14,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:13:14,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:13:14,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:13:14,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:13:14,519 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:13:14,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:13:14,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:13:14,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:13:14,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:13:14,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:13:14,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:13:14,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:13:14,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:13:14,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:13:14,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:13:14,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:13:14,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:13:14,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:13:14,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:13:14,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:13:14,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:13:14,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:13:14,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:13:14,852 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:13:14,853 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label11.c [2020-10-14 04:13:14,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aebdbec25/9d548373d71d4d4d9b5d0a46cfa15446/FLAGcf2001ea4 [2020-10-14 04:13:15,764 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:13:15,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label11.c [2020-10-14 04:13:15,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aebdbec25/9d548373d71d4d4d9b5d0a46cfa15446/FLAGcf2001ea4 [2020-10-14 04:13:15,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aebdbec25/9d548373d71d4d4d9b5d0a46cfa15446 [2020-10-14 04:13:15,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:13:15,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:13:15,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:13:15,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:13:15,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:13:15,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:13:15" (1/1) ... [2020-10-14 04:13:15,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fa96a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:15, skipping insertion in model container [2020-10-14 04:13:15,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:13:15" (1/1) ... [2020-10-14 04:13:15,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:13:15,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:13:17,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:13:17,344 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:13:17,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:13:17,890 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:13:17,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:17 WrapperNode [2020-10-14 04:13:17,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:13:17,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:13:17,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:13:17,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:13:17,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:17" (1/1) ... [2020-10-14 04:13:17,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:17" (1/1) ... [2020-10-14 04:13:17,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:17" (1/1) ... [2020-10-14 04:13:17,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:17" (1/1) ... [2020-10-14 04:13:18,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:17" (1/1) ... [2020-10-14 04:13:18,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:17" (1/1) ... [2020-10-14 04:13:18,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:17" (1/1) ... [2020-10-14 04:13:18,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:13:18,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:13:18,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:13:18,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:13:18,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:17" (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 [2020-10-14 04:13:18,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:13:18,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:13:18,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:13:18,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:13:18,314 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:13:18,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:13:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:13:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:13:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:13:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:13:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:13:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:13:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:13:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:13:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:13:24,516 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:13:24,516 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:13:24,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:13:24 BoogieIcfgContainer [2020-10-14 04:13:24,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:13:24,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:13:24,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:13:24,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:13:24,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:13:15" (1/3) ... [2020-10-14 04:13:24,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbb54cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:13:24, skipping insertion in model container [2020-10-14 04:13:24,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:13:17" (2/3) ... [2020-10-14 04:13:24,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbb54cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:13:24, skipping insertion in model container [2020-10-14 04:13:24,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:13:24" (3/3) ... [2020-10-14 04:13:24,540 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label11.c [2020-10-14 04:13:24,554 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:13:24,565 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:13:24,584 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:13:24,616 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:13:24,616 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:13:24,617 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:13:24,617 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:13:24,617 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:13:24,617 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:13:24,617 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:13:24,617 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:13:24,654 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:13:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:13:24,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:24,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:13:24,666 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:24,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:24,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1042189663, now seen corresponding path program 1 times [2020-10-14 04:13:24,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:24,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849992191] [2020-10-14 04:13:24,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:24,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:25,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:25,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:13:25,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-14 04:13:25,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:25,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:13:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:13:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 04:13:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:13:25,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:25,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:25,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:25,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:25,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:25,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:13:25,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:25,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:13:25,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:13:25,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849992191] [2020-10-14 04:13:25,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:13:25,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:13:25,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136000656] [2020-10-14 04:13:25,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:13:25,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:25,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:13:25,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:13:25,543 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:13:33,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:33,786 INFO L93 Difference]: Finished difference Result 2286 states and 4361 transitions. [2020-10-14 04:13:33,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:13:33,788 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-14 04:13:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:33,821 INFO L225 Difference]: With dead ends: 2286 [2020-10-14 04:13:33,821 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:13:33,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:13:33,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:13:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1420. [2020-10-14 04:13:33,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1420 states. [2020-10-14 04:13:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2251 transitions. [2020-10-14 04:13:33,990 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2251 transitions. Word has length 48 [2020-10-14 04:13:33,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:33,991 INFO L479 AbstractCegarLoop]: Abstraction has 1420 states and 2251 transitions. [2020-10-14 04:13:33,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:13:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2251 transitions. [2020-10-14 04:13:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 04:13:33,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:33,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:13:33,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:13:33,998 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:33,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:33,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1749981219, now seen corresponding path program 1 times [2020-10-14 04:13:33,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:33,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408928654] [2020-10-14 04:13:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:34,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:34,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:35,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:35,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 04:13:35,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:13:35,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-10-14 04:13:35,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:35,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:35,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:13:35,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 04:13:35,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:13:35,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:35,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:35,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:35,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:35,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:35,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:13:35,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:35,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:13:35,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:35,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:35,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:35,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:13:35,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:35,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 04:13:35,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:35,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:35,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:13:35,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:13:35,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408928654] [2020-10-14 04:13:35,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:35,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:13:35,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770374783] [2020-10-14 04:13:35,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:13:35,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:35,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:13:35,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:13:35,703 INFO L87 Difference]: Start difference. First operand 1420 states and 2251 transitions. Second operand 5 states. [2020-10-14 04:13:44,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:44,426 INFO L93 Difference]: Finished difference Result 4274 states and 6801 transitions. [2020-10-14 04:13:44,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:13:44,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-14 04:13:44,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:44,444 INFO L225 Difference]: With dead ends: 4274 [2020-10-14 04:13:44,445 INFO L226 Difference]: Without dead ends: 2860 [2020-10-14 04:13:44,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:13:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2020-10-14 04:13:44,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2856. [2020-10-14 04:13:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2020-10-14 04:13:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4050 transitions. [2020-10-14 04:13:44,615 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4050 transitions. Word has length 117 [2020-10-14 04:13:44,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:44,616 INFO L479 AbstractCegarLoop]: Abstraction has 2856 states and 4050 transitions. [2020-10-14 04:13:44,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:13:44,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4050 transitions. [2020-10-14 04:13:44,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 04:13:44,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:44,620 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:13:44,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:13:44,621 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:44,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:44,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1100076181, now seen corresponding path program 1 times [2020-10-14 04:13:44,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:44,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790895582] [2020-10-14 04:13:44,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:44,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:45,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:45,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 04:13:45,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:13:45,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-14 04:13:45,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:45,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 04:13:45,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 04:13:45,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:45,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:45,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:45,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:45,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:45,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:45,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:13:45,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:45,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:45,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:45,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:45,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:45,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:45,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:13:45,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:45,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 04:13:45,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:45,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:45,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:13:45,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:13:45,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790895582] [2020-10-14 04:13:45,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:45,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:13:45,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914529967] [2020-10-14 04:13:45,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:13:45,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:45,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:13:45,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:13:45,456 INFO L87 Difference]: Start difference. First operand 2856 states and 4050 transitions. Second operand 5 states. [2020-10-14 04:13:56,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:56,260 INFO L93 Difference]: Finished difference Result 5710 states and 8746 transitions. [2020-10-14 04:13:56,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:13:56,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 04:13:56,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:56,285 INFO L225 Difference]: With dead ends: 5710 [2020-10-14 04:13:56,285 INFO L226 Difference]: Without dead ends: 4280 [2020-10-14 04:13:56,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:13:56,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2020-10-14 04:13:56,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4276. [2020-10-14 04:13:56,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4276 states. [2020-10-14 04:13:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 6022 transitions. [2020-10-14 04:13:56,408 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 6022 transitions. Word has length 121 [2020-10-14 04:13:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:56,409 INFO L479 AbstractCegarLoop]: Abstraction has 4276 states and 6022 transitions. [2020-10-14 04:13:56,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:13:56,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 6022 transitions. [2020-10-14 04:13:56,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 04:13:56,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:56,414 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:13:56,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:13:56,414 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:56,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:56,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1522937192, now seen corresponding path program 1 times [2020-10-14 04:13:56,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:56,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862094296] [2020-10-14 04:13:56,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:56,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:57,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:57,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 04:13:57,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:13:57,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-10-14 04:13:57,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:57,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 04:13:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 04:13:57,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:57,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:57,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:57,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:57,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:57,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:57,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:13:57,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:57,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:57,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:57,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:57,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:57,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:57,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:57,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:57,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:57,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 04:13:57,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:57,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 04:13:57,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:57,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:57,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:57,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:57,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:13:57,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:13:57,310 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:13:57,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862094296] [2020-10-14 04:13:57,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:57,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:13:57,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793072976] [2020-10-14 04:13:57,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:13:57,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:57,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:13:57,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:13:57,313 INFO L87 Difference]: Start difference. First operand 4276 states and 6022 transitions. Second operand 6 states. [2020-10-14 04:14:06,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:06,552 INFO L93 Difference]: Finished difference Result 12804 states and 18240 transitions. [2020-10-14 04:14:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:14:06,553 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-10-14 04:14:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:06,592 INFO L225 Difference]: With dead ends: 12804 [2020-10-14 04:14:06,592 INFO L226 Difference]: Without dead ends: 8534 [2020-10-14 04:14:06,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:14:06,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2020-10-14 04:14:06,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 8530. [2020-10-14 04:14:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8530 states. [2020-10-14 04:14:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8530 states to 8530 states and 11884 transitions. [2020-10-14 04:14:06,824 INFO L78 Accepts]: Start accepts. Automaton has 8530 states and 11884 transitions. Word has length 144 [2020-10-14 04:14:06,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:06,826 INFO L479 AbstractCegarLoop]: Abstraction has 8530 states and 11884 transitions. [2020-10-14 04:14:06,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:14:06,827 INFO L276 IsEmpty]: Start isEmpty. Operand 8530 states and 11884 transitions. [2020-10-14 04:14:06,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-14 04:14:06,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:06,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-14 04:14:06,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:14:06,833 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:06,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:06,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1598175684, now seen corresponding path program 1 times [2020-10-14 04:14:06,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:06,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133927315] [2020-10-14 04:14:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:06,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:08,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:09,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:09,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-14 04:14:09,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:14:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3037 [2020-10-14 04:14:09,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:09,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:14:09,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:14:09,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:09,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:09,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:09,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:09,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:09,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:09,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:14:09,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:09,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:09,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:09,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:10,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:10,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:10,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:14:10,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:10,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 04:14:10,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:10,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:10,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:10,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:14:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:14:10,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 04:14:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:10,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:10,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 04:14:10,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:10,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 04:14:10,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:10,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:14:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 04:14:10,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:14:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:14:10,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133927315] [2020-10-14 04:14:10,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:10,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:14:10,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036654758] [2020-10-14 04:14:10,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:14:10,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:10,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:14:10,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:14:10,314 INFO L87 Difference]: Start difference. First operand 8530 states and 11884 transitions. Second operand 7 states. [2020-10-14 04:14:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:19,946 INFO L93 Difference]: Finished difference Result 25122 states and 36370 transitions. [2020-10-14 04:14:19,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:14:19,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-10-14 04:14:19,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:20,028 INFO L225 Difference]: With dead ends: 25122 [2020-10-14 04:14:20,028 INFO L226 Difference]: Without dead ends: 16598 [2020-10-14 04:14:20,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:14:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16598 states. [2020-10-14 04:14:20,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16598 to 16515. [2020-10-14 04:14:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16515 states. [2020-10-14 04:14:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16515 states to 16515 states and 21887 transitions. [2020-10-14 04:14:20,520 INFO L78 Accepts]: Start accepts. Automaton has 16515 states and 21887 transitions. Word has length 197 [2020-10-14 04:14:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:20,520 INFO L479 AbstractCegarLoop]: Abstraction has 16515 states and 21887 transitions. [2020-10-14 04:14:20,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:14:20,520 INFO L276 IsEmpty]: Start isEmpty. Operand 16515 states and 21887 transitions. [2020-10-14 04:14:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 04:14:20,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:20,527 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-10-14 04:14:20,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:14:20,528 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:20,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:20,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1808529868, now seen corresponding path program 1 times [2020-10-14 04:14:20,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:20,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640934619] [2020-10-14 04:14:20,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:20,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:23,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:24,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:24,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 04:14:24,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:14:24,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3820 [2020-10-14 04:14:24,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:24,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 04:14:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:14:24,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:24,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:24,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:24,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:24,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:24,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:14:24,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:24,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:24,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:24,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:24,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:24,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:24,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:24,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:14:24,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:24,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 04:14:24,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:24,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:24,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:24,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:24,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:14:24,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:24,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 04:14:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:24,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:24,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:24,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:14:24,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:24,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 04:14:24,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:24,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:14:24,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:14:24,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:14:24,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640934619] [2020-10-14 04:14:24,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:24,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:14:24,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593431151] [2020-10-14 04:14:24,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:14:24,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:24,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:14:24,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:14:24,872 INFO L87 Difference]: Start difference. First operand 16515 states and 21887 transitions. Second operand 7 states. [2020-10-14 04:14:33,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:33,878 INFO L93 Difference]: Finished difference Result 29730 states and 40126 transitions. [2020-10-14 04:14:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:14:33,879 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-14 04:14:33,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:33,922 INFO L225 Difference]: With dead ends: 29730 [2020-10-14 04:14:33,923 INFO L226 Difference]: Without dead ends: 13221 [2020-10-14 04:14:33,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:14:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13221 states. [2020-10-14 04:14:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13221 to 10959. [2020-10-14 04:14:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10959 states. [2020-10-14 04:14:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10959 states to 10959 states and 13355 transitions. [2020-10-14 04:14:34,204 INFO L78 Accepts]: Start accepts. Automaton has 10959 states and 13355 transitions. Word has length 205 [2020-10-14 04:14:34,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:34,204 INFO L479 AbstractCegarLoop]: Abstraction has 10959 states and 13355 transitions. [2020-10-14 04:14:34,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:14:34,207 INFO L276 IsEmpty]: Start isEmpty. Operand 10959 states and 13355 transitions. [2020-10-14 04:14:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-14 04:14:34,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:34,219 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:14:34,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:14:34,219 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:34,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:34,220 INFO L82 PathProgramCache]: Analyzing trace with hash 321134473, now seen corresponding path program 1 times [2020-10-14 04:14:34,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:34,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285760856] [2020-10-14 04:14:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:34,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:34,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:38,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:38,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:39,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:39,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-14 04:14:39,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:14:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 04:14:39,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:39,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 215 [2020-10-14 04:14:39,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:14:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:14:39,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:14:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:39,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:39,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:39,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:14:39,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:39,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:14:39,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:39,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:39,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:39,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:39,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:14:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:39,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:39,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:39,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:14:39,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:39,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 04:14:39,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:39,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:39,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:14:39,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:39,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:14:39,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:39,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:14:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:39,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:39,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:39,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:14:39,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:39,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 04:14:39,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:39,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:14:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:14:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:14:39,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:39,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-14 04:14:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:39,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:39,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:14:39,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:14:39,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:14:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:14:39,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:14:39,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:14:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:14:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:14:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:14:39,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:14:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 291 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 04:14:39,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285760856] [2020-10-14 04:14:39,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:14:39,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:14:39,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988991095] [2020-10-14 04:14:39,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:14:39,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:14:39,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:14:39,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:14:39,764 INFO L87 Difference]: Start difference. First operand 10959 states and 13355 transitions. Second operand 7 states. [2020-10-14 04:14:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:14:56,315 INFO L93 Difference]: Finished difference Result 32151 states and 40709 transitions. [2020-10-14 04:14:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:14:56,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 339 [2020-10-14 04:14:56,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:14:56,376 INFO L225 Difference]: With dead ends: 32151 [2020-10-14 04:14:56,376 INFO L226 Difference]: Without dead ends: 18928 [2020-10-14 04:14:56,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:14:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18928 states. [2020-10-14 04:14:56,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18928 to 18886. [2020-10-14 04:14:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18886 states. [2020-10-14 04:14:56,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18886 states to 18886 states and 21385 transitions. [2020-10-14 04:14:56,961 INFO L78 Accepts]: Start accepts. Automaton has 18886 states and 21385 transitions. Word has length 339 [2020-10-14 04:14:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:14:56,962 INFO L479 AbstractCegarLoop]: Abstraction has 18886 states and 21385 transitions. [2020-10-14 04:14:56,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:14:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 18886 states and 21385 transitions. [2020-10-14 04:14:56,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-14 04:14:56,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:14:56,973 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:14:56,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:14:56,973 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:14:56,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:14:56,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1486774594, now seen corresponding path program 1 times [2020-10-14 04:14:56,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:14:56,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039112637] [2020-10-14 04:14:56,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:14:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:14:57,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:57,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:14:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:02,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:02,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-14 04:15:02,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:15:02,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 04:15:02,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:02,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:15:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:15:02,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:02,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:02,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:02,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:02,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:15:02,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:02,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:02,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:02,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:02,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:02,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:15:02,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:02,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 04:15:02,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:02,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:02,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:15:02,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:02,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:15:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:02,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:02,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:02,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:15:02,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:02,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-14 04:15:02,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:02,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:15:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:15:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:02,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 04:15:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:02,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:02,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:02,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:15:02,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:02,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:15:02,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:02,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:15:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:02,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:02,983 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 230 proven. 87 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 04:15:02,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039112637] [2020-10-14 04:15:02,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:02,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:15:02,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156494776] [2020-10-14 04:15:02,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:15:02,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:02,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:15:02,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:15:02,986 INFO L87 Difference]: Start difference. First operand 18886 states and 21385 transitions. Second operand 7 states. [2020-10-14 04:15:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:18,809 INFO L93 Difference]: Finished difference Result 49660 states and 58617 transitions. [2020-10-14 04:15:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:15:18,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 364 [2020-10-14 04:15:18,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:18,922 INFO L225 Difference]: With dead ends: 49660 [2020-10-14 04:15:18,922 INFO L226 Difference]: Without dead ends: 32192 [2020-10-14 04:15:18,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:15:19,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32192 states. [2020-10-14 04:15:20,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32192 to 32070. [2020-10-14 04:15:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32070 states. [2020-10-14 04:15:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32070 states to 32070 states and 36852 transitions. [2020-10-14 04:15:20,650 INFO L78 Accepts]: Start accepts. Automaton has 32070 states and 36852 transitions. Word has length 364 [2020-10-14 04:15:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:20,651 INFO L479 AbstractCegarLoop]: Abstraction has 32070 states and 36852 transitions. [2020-10-14 04:15:20,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:15:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 32070 states and 36852 transitions. [2020-10-14 04:15:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-14 04:15:20,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:20,670 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 04:15:20,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:15:20,671 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:20,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:20,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1899678942, now seen corresponding path program 1 times [2020-10-14 04:15:20,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:20,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569451856] [2020-10-14 04:15:20,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:20,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:22,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:22,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:24,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:25,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:25,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-14 04:15:25,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:15:25,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 04:15:25,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:25,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:25,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:25,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 244 [2020-10-14 04:15:25,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:15:25,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:25,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:25,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:25,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:25,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:15:25,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:25,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:25,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:25,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:25,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:25,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:15:25,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:26,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:26,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 04:15:26,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 04:15:26,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:26,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-14 04:15:26,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:26,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-14 04:15:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:26,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:26,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:26,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:15:26,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 04:15:26,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:26,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:15:26,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:15:26,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:26,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-14 04:15:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:26,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:26,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:26,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:15:26,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:26,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 04:15:26,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:26,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:15:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:26,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 230 proven. 87 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-14 04:15:27,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569451856] [2020-10-14 04:15:27,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:27,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:15:27,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582733550] [2020-10-14 04:15:27,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:15:27,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:27,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:15:27,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:15:27,060 INFO L87 Difference]: Start difference. First operand 32070 states and 36852 transitions. Second operand 8 states. [2020-10-14 04:15:40,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:40,531 INFO L93 Difference]: Finished difference Result 59821 states and 68706 transitions. [2020-10-14 04:15:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:15:40,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 476 [2020-10-14 04:15:40,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:40,603 INFO L225 Difference]: With dead ends: 59821 [2020-10-14 04:15:40,603 INFO L226 Difference]: Without dead ends: 29169 [2020-10-14 04:15:40,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:15:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29169 states. [2020-10-14 04:15:41,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29169 to 29040. [2020-10-14 04:15:41,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29040 states. [2020-10-14 04:15:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29040 states to 29040 states and 32137 transitions. [2020-10-14 04:15:41,146 INFO L78 Accepts]: Start accepts. Automaton has 29040 states and 32137 transitions. Word has length 476 [2020-10-14 04:15:41,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:41,147 INFO L479 AbstractCegarLoop]: Abstraction has 29040 states and 32137 transitions. [2020-10-14 04:15:41,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:15:41,147 INFO L276 IsEmpty]: Start isEmpty. Operand 29040 states and 32137 transitions. [2020-10-14 04:15:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2020-10-14 04:15:41,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:41,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:15:41,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:15:41,186 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:41,187 INFO L82 PathProgramCache]: Analyzing trace with hash -74898112, now seen corresponding path program 1 times [2020-10-14 04:15:41,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:41,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704337330] [2020-10-14 04:15:41,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:41,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:41,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:43,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:44,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:46,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:46,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 621 [2020-10-14 04:15:46,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:15:46,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 04:15:46,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:46,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:15:46,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 570 [2020-10-14 04:15:46,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 04:15:46,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:46,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:15:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:46,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:46,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:15:46,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:15:46,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:46,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:46,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:46,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:15:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:46,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:46,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:46,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:15:46,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:46,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 04:15:46,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:46,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:15:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:15:46,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:46,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:15:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:46,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:46,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-14 04:15:46,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:46,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 04:15:46,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:46,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:46,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:46,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:46,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 431 [2020-10-14 04:15:46,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:15:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:15:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:46,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:47,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:15:47,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-14 04:15:47,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:15:47,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 04:15:47,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:15:47,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:15:47,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:15:47,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:15:47,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 04:15:47,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:15:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-14 04:15:47,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704337330] [2020-10-14 04:15:47,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:15:47,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:15:47,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192804512] [2020-10-14 04:15:47,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:15:47,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:15:47,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:15:47,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:15:47,249 INFO L87 Difference]: Start difference. First operand 29040 states and 32137 transitions. Second operand 5 states. [2020-10-14 04:15:54,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:15:54,469 INFO L93 Difference]: Finished difference Result 62401 states and 70288 transitions. [2020-10-14 04:15:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:15:54,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 607 [2020-10-14 04:15:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:15:54,553 INFO L225 Difference]: With dead ends: 62401 [2020-10-14 04:15:54,554 INFO L226 Difference]: Without dead ends: 31931 [2020-10-14 04:15:54,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:15:54,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31931 states. [2020-10-14 04:15:55,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31931 to 31916. [2020-10-14 04:15:55,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31916 states. [2020-10-14 04:15:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31916 states to 31916 states and 35465 transitions. [2020-10-14 04:15:55,067 INFO L78 Accepts]: Start accepts. Automaton has 31916 states and 35465 transitions. Word has length 607 [2020-10-14 04:15:55,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:15:55,068 INFO L479 AbstractCegarLoop]: Abstraction has 31916 states and 35465 transitions. [2020-10-14 04:15:55,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:15:55,068 INFO L276 IsEmpty]: Start isEmpty. Operand 31916 states and 35465 transitions. [2020-10-14 04:15:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2020-10-14 04:15:55,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:15:55,093 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 04:15:55,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:15:55,094 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:15:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:15:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash 20157600, now seen corresponding path program 1 times [2020-10-14 04:15:55,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:15:55,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802199880] [2020-10-14 04:15:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:15:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:15:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:55,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:55,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:15:55,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:00,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:00,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 687 [2020-10-14 04:16:00,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:16:00,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 04:16:00,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:00,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-14 04:16:00,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:16:00,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:00,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:00,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:00,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:00,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:16:00,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:00,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:00,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:00,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:00,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:00,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:00,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:00,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 04:16:00,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:00,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 04:16:00,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:00,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:00,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:00,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 04:16:00,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:00,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:16:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:00,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:00,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:00,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 04:16:00,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:00,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:16:00,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:00,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:00,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 04:16:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:00,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-14 04:16:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:00,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:00,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:00,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 04:16:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 04:16:00,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:00,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:16:00,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:01,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2020-10-14 04:16:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:01,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:01,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:01,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:16:01,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:01,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 04:16:01,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:01,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:01,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:01,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 04:16:01,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:01,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:01,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2020-10-14 04:16:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:01,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:01,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:01,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:16:01,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:01,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 04:16:01,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:01,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:01,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:01,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:16:01,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:01,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:16:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 280 proven. 199 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-10-14 04:16:01,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802199880] [2020-10-14 04:16:01,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:01,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:16:01,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229672944] [2020-10-14 04:16:01,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:16:01,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:01,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:16:01,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:01,326 INFO L87 Difference]: Start difference. First operand 31916 states and 35465 transitions. Second operand 7 states. [2020-10-14 04:16:09,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:09,768 INFO L93 Difference]: Finished difference Result 71814 states and 81194 transitions. [2020-10-14 04:16:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:16:09,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 669 [2020-10-14 04:16:09,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:09,867 INFO L225 Difference]: With dead ends: 71814 [2020-10-14 04:16:09,867 INFO L226 Difference]: Without dead ends: 40609 [2020-10-14 04:16:09,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:16:09,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40609 states. [2020-10-14 04:16:10,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40609 to 39129. [2020-10-14 04:16:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39129 states. [2020-10-14 04:16:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39129 states to 39129 states and 43910 transitions. [2020-10-14 04:16:10,797 INFO L78 Accepts]: Start accepts. Automaton has 39129 states and 43910 transitions. Word has length 669 [2020-10-14 04:16:10,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:10,798 INFO L479 AbstractCegarLoop]: Abstraction has 39129 states and 43910 transitions. [2020-10-14 04:16:10,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:16:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand 39129 states and 43910 transitions. [2020-10-14 04:16:10,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2020-10-14 04:16:10,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:10,818 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:16:10,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:16:10,818 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:10,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:10,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1708915666, now seen corresponding path program 1 times [2020-10-14 04:16:10,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:10,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548292673] [2020-10-14 04:16:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:11,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:13,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:13,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:14,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:15,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:15,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 691 [2020-10-14 04:16:15,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:16:15,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 04:16:15,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:15,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 543 [2020-10-14 04:16:15,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:16:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:16,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:16,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:16,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:16,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:16,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:16:16,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:16,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:16,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:16,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:16,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:16,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:16,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:16,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:16:16,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:16,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 04:16:16,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:16,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:16,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:16,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:16:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:16,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:16,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:16,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-14 04:16:16,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:16,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 04:16:16,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:16,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:16,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:16,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:16,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 404 [2020-10-14 04:16:16,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:16,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:16:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:16,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:16,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 04:16:16,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:16,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 04:16:16,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:16,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 04:16:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:16,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-10-14 04:16:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:16,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:16,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:16,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:16:16,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:16,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 04:16:16,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:16,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:16,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:16:16,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-14 04:16:17,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548292673] [2020-10-14 04:16:17,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:17,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:16:17,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25535739] [2020-10-14 04:16:17,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:16:17,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:17,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:16:17,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:17,058 INFO L87 Difference]: Start difference. First operand 39129 states and 43910 transitions. Second operand 7 states. [2020-10-14 04:16:30,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:30,293 INFO L93 Difference]: Finished difference Result 79092 states and 89444 transitions. [2020-10-14 04:16:30,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:16:30,295 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 675 [2020-10-14 04:16:30,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:30,413 INFO L225 Difference]: With dead ends: 79092 [2020-10-14 04:16:30,413 INFO L226 Difference]: Without dead ends: 41381 [2020-10-14 04:16:30,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:16:30,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41381 states. [2020-10-14 04:16:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41381 to 40607. [2020-10-14 04:16:31,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40607 states. [2020-10-14 04:16:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40607 states to 40607 states and 45834 transitions. [2020-10-14 04:16:31,138 INFO L78 Accepts]: Start accepts. Automaton has 40607 states and 45834 transitions. Word has length 675 [2020-10-14 04:16:31,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:31,139 INFO L479 AbstractCegarLoop]: Abstraction has 40607 states and 45834 transitions. [2020-10-14 04:16:31,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:16:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 40607 states and 45834 transitions. [2020-10-14 04:16:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-14 04:16:31,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:31,159 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:16:31,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:16:31,160 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:31,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:31,160 INFO L82 PathProgramCache]: Analyzing trace with hash 425568635, now seen corresponding path program 1 times [2020-10-14 04:16:31,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:31,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401567226] [2020-10-14 04:16:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:31,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:31,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:35,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:36,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:36,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 695 [2020-10-14 04:16:36,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:16:36,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-14 04:16:36,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:36,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:36,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:36,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:16:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-14 04:16:36,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:16:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:36,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:36,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:36,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:16:36,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:36,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:16:36,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:36,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:36,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:36,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:36,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:16:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:36,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:36,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:16:36,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:36,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 04:16:36,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:36,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:16:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:16:36,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:16:36,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:36,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:16:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:36,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:36,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:36,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-14 04:16:36,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:36,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 04:16:36,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:36,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:16:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:16:36,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-14 04:16:36,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:36,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-10-14 04:16:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:36,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:36,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:16:36,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:36,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:16:36,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:36,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 04:16:36,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:36,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:36,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2020-10-14 04:16:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:36,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:36,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:36,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 04:16:36,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 04:16:36,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:36,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 04:16:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:36,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2020-10-14 04:16:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:36,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:16:36,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:16:36,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:16:36,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:16:36,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:16:36,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:16:36,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:16:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 04:16:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:16:36,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:16:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 336 proven. 265 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2020-10-14 04:16:37,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401567226] [2020-10-14 04:16:37,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:16:37,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:16:37,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980492238] [2020-10-14 04:16:37,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:16:37,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:16:37,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:16:37,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:16:37,335 INFO L87 Difference]: Start difference. First operand 40607 states and 45834 transitions. Second operand 7 states. [2020-10-14 04:16:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:16:48,426 INFO L93 Difference]: Finished difference Result 94741 states and 108965 transitions. [2020-10-14 04:16:48,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:16:48,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 677 [2020-10-14 04:16:48,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:16:48,538 INFO L225 Difference]: With dead ends: 94741 [2020-10-14 04:16:48,538 INFO L226 Difference]: Without dead ends: 55552 [2020-10-14 04:16:48,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:16:48,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55552 states. [2020-10-14 04:16:49,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55552 to 54797. [2020-10-14 04:16:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54797 states. [2020-10-14 04:16:49,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54797 states to 54797 states and 61832 transitions. [2020-10-14 04:16:49,329 INFO L78 Accepts]: Start accepts. Automaton has 54797 states and 61832 transitions. Word has length 677 [2020-10-14 04:16:49,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:16:49,330 INFO L479 AbstractCegarLoop]: Abstraction has 54797 states and 61832 transitions. [2020-10-14 04:16:49,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:16:49,330 INFO L276 IsEmpty]: Start isEmpty. Operand 54797 states and 61832 transitions. [2020-10-14 04:16:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2020-10-14 04:16:49,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:16:49,348 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:16:49,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:16:49,348 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:16:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:16:49,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2028931319, now seen corresponding path program 1 times [2020-10-14 04:16:49,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:16:49,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191845531] [2020-10-14 04:16:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:16:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:16:49,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:49,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:51,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:51,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:16:53,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking...