/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:45:14,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:45:14,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:45:14,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:45:14,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:45:14,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:45:14,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:45:14,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:45:14,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:45:14,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:45:14,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:45:14,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:45:14,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:45:14,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:45:14,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:45:14,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:45:14,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:45:14,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:45:14,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:45:14,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:45:14,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:45:14,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:45:14,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:45:14,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:45:14,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:45:14,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:45:14,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:45:14,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:45:14,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:45:14,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:45:14,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:45:14,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:45:14,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:45:14,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:45:14,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:45:14,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:45:14,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:45:14,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:45:14,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:45:14,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:45:14,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:45:14,490 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 [2020-09-25 06:45:14,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:45:14,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:45:14,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:45:14,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:45:14,536 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:45:14,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:45:14,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:45:14,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:45:14,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:45:14,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:45:14,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:45:14,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:45:14,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:45:14,539 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:45:14,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:45:14,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:45:14,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:45:14,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:45:14,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:45:14,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:45:14,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:45:14,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:45:14,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:45:14,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:45:14,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:45:14,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:45:14,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:45:14,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:45:14,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:45:14,542 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:45:15,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:45:15,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:45:15,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:45:15,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:45:15,070 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:45:15,071 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label32.c [2020-09-25 06:45:15,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3967a2bb/649bd7c77b7b40f9ba036cd72d16aad6/FLAG655ad5a15 [2020-09-25 06:45:15,798 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:45:15,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label32.c [2020-09-25 06:45:15,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3967a2bb/649bd7c77b7b40f9ba036cd72d16aad6/FLAG655ad5a15 [2020-09-25 06:45:16,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3967a2bb/649bd7c77b7b40f9ba036cd72d16aad6 [2020-09-25 06:45:16,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:45:16,031 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:45:16,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:16,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:45:16,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:45:16,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:16" (1/1) ... [2020-09-25 06:45:16,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:16, skipping insertion in model container [2020-09-25 06:45:16,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:16" (1/1) ... [2020-09-25 06:45:16,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:45:16,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:45:16,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:16,612 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:45:16,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:16,832 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:45:16,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:16 WrapperNode [2020-09-25 06:45:16,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:16,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:45:16,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:45:16,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:45:16,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:16" (1/1) ... [2020-09-25 06:45:16,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:16" (1/1) ... [2020-09-25 06:45:16,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:16" (1/1) ... [2020-09-25 06:45:16,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:16" (1/1) ... [2020-09-25 06:45:16,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:16" (1/1) ... [2020-09-25 06:45:16,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:16" (1/1) ... [2020-09-25 06:45:16,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:16" (1/1) ... [2020-09-25 06:45:16,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:45:16,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:45:16,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:45:16,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:45:16,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:16" (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 [2020-09-25 06:45:17,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:45:17,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:45:17,062 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:45:17,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:45:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:45:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:45:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:45:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:45:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:45:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:45:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:45:18,341 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:45:18,342 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:45:18,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:18 BoogieIcfgContainer [2020-09-25 06:45:18,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:45:18,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:45:18,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:45:18,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:45:18,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:45:16" (1/3) ... [2020-09-25 06:45:18,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:18, skipping insertion in model container [2020-09-25 06:45:18,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:16" (2/3) ... [2020-09-25 06:45:18,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:18, skipping insertion in model container [2020-09-25 06:45:18,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:18" (3/3) ... [2020-09-25 06:45:18,360 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label32.c [2020-09-25 06:45:18,371 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:45:18,382 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:45:18,405 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:45:18,439 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:45:18,439 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:45:18,440 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:45:18,440 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:45:18,440 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:45:18,440 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:45:18,440 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:45:18,440 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:45:18,472 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:45:18,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 06:45:18,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:18,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:18,496 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:18,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:18,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1568421906, now seen corresponding path program 1 times [2020-09-25 06:45:18,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:18,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-25 06:45:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:19,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:19,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:19,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:21,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:21,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:22,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:22,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:22,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:23,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 06:45:23,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:45:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 06:45:23,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:23,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:45:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 06:45:23,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:45:24,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:24,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:24,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:24,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:24,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:24,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:45:24,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:24,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:24,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:24,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:24,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:45:24,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:24,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-25 06:45:24,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:45:24,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:45:24,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235248440] [2020-09-25 06:45:24,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:45:24,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:24,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:45:24,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:45:24,196 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:45:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:26,653 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-25 06:45:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:45:26,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-09-25 06:45:26,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:26,695 INFO L225 Difference]: With dead ends: 1247 [2020-09-25 06:45:26,696 INFO L226 Difference]: Without dead ends: 669 [2020-09-25 06:45:26,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:26,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-25 06:45:26,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-25 06:45:26,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 06:45:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 06:45:26,864 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 135 [2020-09-25 06:45:26,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:26,866 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 06:45:26,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:45:26,866 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 06:45:26,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 06:45:26,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:26,877 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:45:26,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:45:26,878 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:26,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1119247929, now seen corresponding path program 1 times [2020-09-25 06:45:26,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:26,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506479126] [2020-09-25 06:45:26,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:26,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:27,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:27,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:28,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:28,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:30,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:30,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:31,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:31,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 06:45:31,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:45:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:45:31,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:31,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:45:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 06:45:31,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:32,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:32,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:32,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:32,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:32,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:45:32,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:32,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:32,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:32,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:32,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:32,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 06:45:32,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:32,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:32,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:32,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:45:32,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:32,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:45:32,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:32,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:45:32,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:32,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506479126] [2020-09-25 06:45:32,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:32,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:32,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361570380] [2020-09-25 06:45:32,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:32,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:32,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:32,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:32,195 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 06:45:34,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:34,165 INFO L93 Difference]: Finished difference Result 1533 states and 1847 transitions. [2020-09-25 06:45:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:34,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 06:45:34,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:34,171 INFO L225 Difference]: With dead ends: 1533 [2020-09-25 06:45:34,172 INFO L226 Difference]: Without dead ends: 934 [2020-09-25 06:45:34,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:34,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-09-25 06:45:34,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 924. [2020-09-25 06:45:34,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-09-25 06:45:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1105 transitions. [2020-09-25 06:45:34,211 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1105 transitions. Word has length 152 [2020-09-25 06:45:34,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:34,212 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1105 transitions. [2020-09-25 06:45:34,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:34,212 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1105 transitions. [2020-09-25 06:45:34,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 06:45:34,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:34,216 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:45:34,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:45:34,217 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:34,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:34,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1353322846, now seen corresponding path program 1 times [2020-09-25 06:45:34,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:34,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561440328] [2020-09-25 06:45:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:34,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:34,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:34,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:35,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:35,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:35,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:39,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:39,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 06:45:39,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:45:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:45:39,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:39,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:45:39,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:45:39,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:39,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:39,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:39,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:39,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:39,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:39,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:45:39,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:39,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:39,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:39,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:39,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:39,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:39,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:39,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:45:39,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:39,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:45:39,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:39,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:39,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:39,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:45:39,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:39,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:45:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:39,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:39,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:39,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:45:39,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:39,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 06:45:39,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:39,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:39,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:39,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:45:39,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:45:39,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561440328] [2020-09-25 06:45:39,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:39,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:45:39,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637650483] [2020-09-25 06:45:39,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:45:39,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:39,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:45:39,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:39,670 INFO L87 Difference]: Start difference. First operand 924 states and 1105 transitions. Second operand 7 states. [2020-09-25 06:45:42,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:42,242 INFO L93 Difference]: Finished difference Result 2391 states and 2955 transitions. [2020-09-25 06:45:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:45:42,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2020-09-25 06:45:42,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:42,254 INFO L225 Difference]: With dead ends: 2391 [2020-09-25 06:45:42,254 INFO L226 Difference]: Without dead ends: 1489 [2020-09-25 06:45:42,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:45:42,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2020-09-25 06:45:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1241. [2020-09-25 06:45:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-09-25 06:45:42,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1552 transitions. [2020-09-25 06:45:42,314 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1552 transitions. Word has length 186 [2020-09-25 06:45:42,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:42,315 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 1552 transitions. [2020-09-25 06:45:42,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:45:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1552 transitions. [2020-09-25 06:45:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 06:45:42,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:42,325 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:45:42,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:45:42,326 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:42,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:42,326 INFO L82 PathProgramCache]: Analyzing trace with hash 853921109, now seen corresponding path program 1 times [2020-09-25 06:45:42,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:42,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950902340] [2020-09-25 06:45:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:42,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:46,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:46,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 06:45:46,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:45:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4437 [2020-09-25 06:45:46,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:46,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:46,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 06:45:46,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 06:45:46,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:46,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:46,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:46,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:46,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:46,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:46,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:46,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:46,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:46,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:46,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:45:46,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:46,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:46,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:46,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:45:46,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:46,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:45:46,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:46,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:46,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:46,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:46,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:46,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:45:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:47,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:47,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:47,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:45:47,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:47,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 06:45:47,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:47,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:47,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:47,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:45:47,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 06:45:47,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950902340] [2020-09-25 06:45:47,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:47,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:47,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714000012] [2020-09-25 06:45:47,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:47,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:47,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:47,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:47,137 INFO L87 Difference]: Start difference. First operand 1241 states and 1552 transitions. Second operand 5 states. [2020-09-25 06:45:49,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:49,080 INFO L93 Difference]: Finished difference Result 3226 states and 4186 transitions. [2020-09-25 06:45:49,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:49,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 06:45:49,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:49,093 INFO L225 Difference]: With dead ends: 3226 [2020-09-25 06:45:49,093 INFO L226 Difference]: Without dead ends: 1481 [2020-09-25 06:45:49,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:49,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-09-25 06:45:49,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1470. [2020-09-25 06:45:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-09-25 06:45:49,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1759 transitions. [2020-09-25 06:45:49,147 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1759 transitions. Word has length 191 [2020-09-25 06:45:49,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:49,148 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1759 transitions. [2020-09-25 06:45:49,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1759 transitions. [2020-09-25 06:45:49,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 06:45:49,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:49,156 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:49,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:45:49,157 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:49,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:49,157 INFO L82 PathProgramCache]: Analyzing trace with hash 867866385, now seen corresponding path program 1 times [2020-09-25 06:45:49,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:49,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24750178] [2020-09-25 06:45:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:49,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:49,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:50,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:50,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:50,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:51,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:53,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:54,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 06:45:54,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:45:54,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 06:45:54,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:54,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 06:45:54,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 06:45:54,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:54,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:54,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:54,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:54,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:45:54,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:54,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:54,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:54,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:54,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:54,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:54,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:54,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:45:54,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:54,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:45:54,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:54,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:54,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:45:54,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:54,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:45:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:54,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:54,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:45:54,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:45:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 06:45:54,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:54,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:45:54,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:54,537 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 06:45:54,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24750178] [2020-09-25 06:45:54,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:54,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:54,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192352310] [2020-09-25 06:45:54,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:54,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:54,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:54,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:54,541 INFO L87 Difference]: Start difference. First operand 1470 states and 1759 transitions. Second operand 5 states. [2020-09-25 06:45:56,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:56,198 INFO L93 Difference]: Finished difference Result 3682 states and 4523 transitions. [2020-09-25 06:45:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:56,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-09-25 06:45:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:56,211 INFO L225 Difference]: With dead ends: 3682 [2020-09-25 06:45:56,212 INFO L226 Difference]: Without dead ends: 2234 [2020-09-25 06:45:56,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:56,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2020-09-25 06:45:56,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2069. [2020-09-25 06:45:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2069 states. [2020-09-25 06:45:56,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2473 transitions. [2020-09-25 06:45:56,294 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2473 transitions. Word has length 199 [2020-09-25 06:45:56,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:56,295 INFO L479 AbstractCegarLoop]: Abstraction has 2069 states and 2473 transitions. [2020-09-25 06:45:56,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:56,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2473 transitions. [2020-09-25 06:45:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 06:45:56,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:56,307 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:45:56,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:45:56,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:56,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:56,308 INFO L82 PathProgramCache]: Analyzing trace with hash 60157500, now seen corresponding path program 1 times [2020-09-25 06:45:56,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:56,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659013058] [2020-09-25 06:45:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:56,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:56,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:56,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:57,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:57,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:57,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:01,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:01,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-25 06:46:01,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:46:01,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 06:46:01,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:01,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:01,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-09-25 06:46:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 06:46:01,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:01,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:01,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:01,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:01,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:01,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:46:01,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:01,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:01,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:01,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:01,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:01,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:01,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:01,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:01,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:01,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:01,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:46:01,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:01,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:01,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:01,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:46:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:01,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:01,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:46:01,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:01,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:01,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:01,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:01,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 06:46:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:01,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:01,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:01,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 06:46:01,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:01,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 06:46:01,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:01,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:46:01,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 101 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-09-25 06:46:01,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659013058] [2020-09-25 06:46:01,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:01,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:01,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334123599] [2020-09-25 06:46:01,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:01,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:01,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:01,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:01,724 INFO L87 Difference]: Start difference. First operand 2069 states and 2473 transitions. Second operand 5 states. [2020-09-25 06:46:03,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:03,444 INFO L93 Difference]: Finished difference Result 4286 states and 5178 transitions. [2020-09-25 06:46:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:03,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-09-25 06:46:03,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:03,450 INFO L225 Difference]: With dead ends: 4286 [2020-09-25 06:46:03,451 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 06:46:03,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:03,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 06:46:03,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 06:46:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 06:46:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 06:46:03,462 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 260 [2020-09-25 06:46:03,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:03,462 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 06:46:03,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:03,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 06:46:03,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 06:46:03,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:46:03,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 06:46:04,221 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76