/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:27,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:27,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:27,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:27,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:27,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:27,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:27,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:27,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:27,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:27,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:27,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:27,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:27,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:27,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:27,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:27,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:27,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:27,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:27,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:27,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:27,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:27,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:27,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:27,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:27,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:27,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:27,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:27,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:27,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:27,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:27,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:27,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:27,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:27,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:27,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:27,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:27,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:27,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:27,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:27,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:27,352 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 14:40:27,376 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:27,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:27,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:27,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:27,378 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:27,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:27,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:27,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:27,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:27,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:27,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:27,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:27,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:27,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:27,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:27,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:27,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:27,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:27,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:27,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:27,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:27,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:27,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:27,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:27,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:27,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:27,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:27,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:27,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:27,384 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:40:27,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:27,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:27,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:27,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:27,891 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:27,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label50.c [2020-09-25 14:40:27,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04211553d/ce43d6c913dd435ca3f82dd80a1573e2/FLAG5f419bf11 [2020-09-25 14:40:28,633 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:28,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label50.c [2020-09-25 14:40:28,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04211553d/ce43d6c913dd435ca3f82dd80a1573e2/FLAG5f419bf11 [2020-09-25 14:40:28,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/04211553d/ce43d6c913dd435ca3f82dd80a1573e2 [2020-09-25 14:40:28,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:28,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:28,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:28,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:28,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:28,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:28" (1/1) ... [2020-09-25 14:40:28,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377c0b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:28, skipping insertion in model container [2020-09-25 14:40:28,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:28" (1/1) ... [2020-09-25 14:40:28,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:28,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:29,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:29,499 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:29,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:29,808 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:29,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:29 WrapperNode [2020-09-25 14:40:29,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:29,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:29,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:29,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:29,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:29" (1/1) ... [2020-09-25 14:40:29,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:29" (1/1) ... [2020-09-25 14:40:29,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:29" (1/1) ... [2020-09-25 14:40:29,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:29" (1/1) ... [2020-09-25 14:40:29,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:29" (1/1) ... [2020-09-25 14:40:29,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:29" (1/1) ... [2020-09-25 14:40:29,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:29" (1/1) ... [2020-09-25 14:40:29,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:29,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:29,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:29,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:29,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:29" (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 14:40:30,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:30,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:30,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:30,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:30,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:30,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:30,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:30,039 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:30,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:30,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:30,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:40:31,413 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:40:31,414 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:40:31,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:31 BoogieIcfgContainer [2020-09-25 14:40:31,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:40:31,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:40:31,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:40:31,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:40:31,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:28" (1/3) ... [2020-09-25 14:40:31,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430cd78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:31, skipping insertion in model container [2020-09-25 14:40:31,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:29" (2/3) ... [2020-09-25 14:40:31,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@430cd78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:31, skipping insertion in model container [2020-09-25 14:40:31,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:31" (3/3) ... [2020-09-25 14:40:31,434 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label50.c [2020-09-25 14:40:31,446 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:40:31,457 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:40:31,477 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:40:31,512 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:40:31,513 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:40:31,513 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:40:31,513 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:40:31,513 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:40:31,514 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:40:31,514 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:40:31,514 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:40:31,548 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:40:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 14:40:31,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:31,570 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] [2020-09-25 14:40:31,570 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:31,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:31,578 INFO L82 PathProgramCache]: Analyzing trace with hash -593885342, now seen corresponding path program 1 times [2020-09-25 14:40:31,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:31,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661778380] [2020-09-25 14:40:31,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:34,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:36,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:36,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 14:40:36,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:40:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4349 [2020-09-25 14:40:36,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:36,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:36,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:40:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 14:40:36,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:40:36,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:36,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:36,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:36,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:36,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 14:40:36,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:36,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:36,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:36,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:40:36,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:40:36,587 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 14:40:36,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661778380] [2020-09-25 14:40:36,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:40:36,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:40:36,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352008545] [2020-09-25 14:40:36,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:36,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:36,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:36,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:36,628 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 14:40:39,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:39,891 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 14:40:39,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:40:39,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-09-25 14:40:39,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:39,926 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 14:40:39,926 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 14:40:39,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:40:39,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 14:40:40,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 14:40:40,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 14:40:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 14:40:40,071 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 107 [2020-09-25 14:40:40,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:40,072 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 14:40:40,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 14:40:40,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 14:40:40,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:40,082 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:40,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:40:40,083 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:40,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:40,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1658093710, now seen corresponding path program 1 times [2020-09-25 14:40:40,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:40,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893349139] [2020-09-25 14:40:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:40,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:40,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:40,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:40,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:43,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 14:40:43,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:40:43,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3056 [2020-09-25 14:40:43,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:43,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:43,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:43,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 14:40:43,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 14:40:43,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:43,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:43,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:43,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:43,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:43,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:40:43,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:43,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:43,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:43,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:43,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:43,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:43,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:43,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:43,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:40:43,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:43,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:40:43,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:43,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:43,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:43,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:40:43,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:43,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893349139] [2020-09-25 14:40:43,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:43,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:43,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116441747] [2020-09-25 14:40:43,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:43,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:43,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:43,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:43,421 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 5 states. [2020-09-25 14:40:45,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:45,367 INFO L93 Difference]: Finished difference Result 2199 states and 2857 transitions. [2020-09-25 14:40:45,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:45,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-09-25 14:40:45,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:45,378 INFO L225 Difference]: With dead ends: 2199 [2020-09-25 14:40:45,379 INFO L226 Difference]: Without dead ends: 1343 [2020-09-25 14:40:45,383 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 14:40:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-09-25 14:40:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1330. [2020-09-25 14:40:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-09-25 14:40:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1680 transitions. [2020-09-25 14:40:45,442 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1680 transitions. Word has length 125 [2020-09-25 14:40:45,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:45,443 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1680 transitions. [2020-09-25 14:40:45,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:45,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1680 transitions. [2020-09-25 14:40:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 14:40:45,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:45,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:45,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:40:45,451 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash -125182521, now seen corresponding path program 1 times [2020-09-25 14:40:45,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:45,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802989751] [2020-09-25 14:40:45,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:45,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:45,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:45,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:45,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:47,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:47,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 14:40:47,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:40:47,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2076 [2020-09-25 14:40:47,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:47,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:47,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 14:40:47,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 14:40:47,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:40:47,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:47,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:47,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:47,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:47,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:40:47,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:47,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:47,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:47,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:47,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:47,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:47,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:47,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:47,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:40:47,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:47,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:40:47,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:47,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:47,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:47,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:40:47,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:47,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802989751] [2020-09-25 14:40:47,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:47,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:47,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261675392] [2020-09-25 14:40:47,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:47,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:47,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:47,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:47,840 INFO L87 Difference]: Start difference. First operand 1330 states and 1680 transitions. Second operand 5 states. [2020-09-25 14:40:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:49,628 INFO L93 Difference]: Finished difference Result 3587 states and 4700 transitions. [2020-09-25 14:40:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:49,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 14:40:49,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:49,646 INFO L225 Difference]: With dead ends: 3587 [2020-09-25 14:40:49,646 INFO L226 Difference]: Without dead ends: 1730 [2020-09-25 14:40:49,653 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 14:40:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2020-09-25 14:40:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1699. [2020-09-25 14:40:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2020-09-25 14:40:49,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2012 transitions. [2020-09-25 14:40:49,720 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2012 transitions. Word has length 141 [2020-09-25 14:40:49,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:49,722 INFO L479 AbstractCegarLoop]: Abstraction has 1699 states and 2012 transitions. [2020-09-25 14:40:49,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:49,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2012 transitions. [2020-09-25 14:40:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 14:40:49,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:49,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:49,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:40:49,733 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:49,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1712229635, now seen corresponding path program 1 times [2020-09-25 14:40:49,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:49,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839070421] [2020-09-25 14:40:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:49,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:50,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:50,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 14:40:50,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:50,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-09-25 14:40:50,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:50,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:50,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:40:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:40:50,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:40:50,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:50,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:50,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:50,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:50,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:50,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:40:50,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:50,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:50,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:50,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:50,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:40:50,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:50,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:50,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:50,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:40:50,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:50,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 14:40:50,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:50,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:40:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:40:50,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:50,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839070421] [2020-09-25 14:40:50,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:40:50,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:40:50,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370746288] [2020-09-25 14:40:50,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:40:50,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:50,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:40:50,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:40:50,538 INFO L87 Difference]: Start difference. First operand 1699 states and 2012 transitions. Second operand 7 states. [2020-09-25 14:40:52,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:52,695 INFO L93 Difference]: Finished difference Result 4375 states and 5355 transitions. [2020-09-25 14:40:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:40:52,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-09-25 14:40:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:52,713 INFO L225 Difference]: With dead ends: 4375 [2020-09-25 14:40:52,713 INFO L226 Difference]: Without dead ends: 2698 [2020-09-25 14:40:52,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:40:52,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2020-09-25 14:40:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2499. [2020-09-25 14:40:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2499 states. [2020-09-25 14:40:52,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 2906 transitions. [2020-09-25 14:40:52,809 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 2906 transitions. Word has length 145 [2020-09-25 14:40:52,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:52,809 INFO L479 AbstractCegarLoop]: Abstraction has 2499 states and 2906 transitions. [2020-09-25 14:40:52,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:40:52,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 2906 transitions. [2020-09-25 14:40:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 14:40:52,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:52,816 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, 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] [2020-09-25 14:40:52,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:40:52,817 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:52,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:52,817 INFO L82 PathProgramCache]: Analyzing trace with hash -451289247, now seen corresponding path program 1 times [2020-09-25 14:40:52,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:52,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234805773] [2020-09-25 14:40:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:52,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:53,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:53,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:53,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 14:40:53,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:40:53,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-09-25 14:40:53,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:53,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 14:40:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 14:40:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:53,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:53,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:53,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:53,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:53,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:53,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:40:53,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:53,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:53,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:53,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:53,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:53,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:53,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:40:53,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:53,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:40:53,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:53,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:53,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:40:53,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:53,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:40:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:53,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:53,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:53,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:40:53,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:40:53,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 14:40:53,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:53,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:40:53,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:40:53,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:40:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 47 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:40:54,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234805773] [2020-09-25 14:40:54,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:54,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:40:54,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991632314] [2020-09-25 14:40:54,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:40:54,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:54,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:40:54,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:40:54,107 INFO L87 Difference]: Start difference. First operand 2499 states and 2906 transitions. Second operand 6 states. [2020-09-25 14:40:56,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:56,349 INFO L93 Difference]: Finished difference Result 6199 states and 7285 transitions. [2020-09-25 14:40:56,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:40:56,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-09-25 14:40:56,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:56,368 INFO L225 Difference]: With dead ends: 6199 [2020-09-25 14:40:56,368 INFO L226 Difference]: Without dead ends: 3386 [2020-09-25 14:40:56,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:40:56,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2020-09-25 14:40:56,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3247. [2020-09-25 14:40:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3247 states. [2020-09-25 14:40:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 3706 transitions. [2020-09-25 14:40:56,469 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 3706 transitions. Word has length 167 [2020-09-25 14:40:56,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:56,470 INFO L479 AbstractCegarLoop]: Abstraction has 3247 states and 3706 transitions. [2020-09-25 14:40:56,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:40:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 3706 transitions. [2020-09-25 14:40:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 14:40:56,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:56,481 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-09-25 14:40:56,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:40:56,481 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:56,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:56,482 INFO L82 PathProgramCache]: Analyzing trace with hash 76072862, now seen corresponding path program 1 times [2020-09-25 14:40:56,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:56,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518419027] [2020-09-25 14:40:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:56,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 14:41:01,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:01,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:41:01,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 14:41:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 14:41:01,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:01,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:01,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:01,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:01,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:41:01,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:01,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:01,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:01,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:01,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:01,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:41:01,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:41:01,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:01,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:41:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 14:41:01,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:41:01,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:01,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:01,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:41:01,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:01,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 14:41:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:01,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:41:01,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:01,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 14:41:01,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:41:01,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:01,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 14:41:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:01,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:01,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:01,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:41:01,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:01,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:41:01,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:01,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:01,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:41:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:01,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 109 proven. 21 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 14:41:01,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518419027] [2020-09-25 14:41:01,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:01,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:41:01,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779545833] [2020-09-25 14:41:01,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:41:01,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:01,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:41:01,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:01,910 INFO L87 Difference]: Start difference. First operand 3247 states and 3706 transitions. Second operand 8 states. [2020-09-25 14:41:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:03,767 INFO L93 Difference]: Finished difference Result 7067 states and 8278 transitions. [2020-09-25 14:41:03,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:41:03,768 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 206 [2020-09-25 14:41:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:03,787 INFO L225 Difference]: With dead ends: 7067 [2020-09-25 14:41:03,787 INFO L226 Difference]: Without dead ends: 3672 [2020-09-25 14:41:03,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:41:03,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2020-09-25 14:41:03,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 2906. [2020-09-25 14:41:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2906 states. [2020-09-25 14:41:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 3248 transitions. [2020-09-25 14:41:03,886 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 3248 transitions. Word has length 206 [2020-09-25 14:41:03,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:03,886 INFO L479 AbstractCegarLoop]: Abstraction has 2906 states and 3248 transitions. [2020-09-25 14:41:03,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:41:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 3248 transitions. [2020-09-25 14:41:03,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 14:41:03,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:03,894 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, 2, 2, 2, 2, 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] [2020-09-25 14:41:03,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:41:03,895 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:03,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:03,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1219149427, now seen corresponding path program 1 times [2020-09-25 14:41:03,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:03,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542759445] [2020-09-25 14:41:03,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:04,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 14:41:04,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:04,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-09-25 14:41:04,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:04,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 14:41:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 14:41:04,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:04,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:04,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:04,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:41:04,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:04,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:04,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:04,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:04,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:04,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:04,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:41:04,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:04,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 14:41:04,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:04,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:04,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:04,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:04,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 14:41:04,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:04,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 14:41:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:04,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:04,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:04,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:41:04,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 14:41:04,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:04,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:04,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:04,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:04,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:41:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:41:04,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542759445] [2020-09-25 14:41:04,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:04,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:41:04,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330268770] [2020-09-25 14:41:04,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:04,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:04,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:04,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:04,821 INFO L87 Difference]: Start difference. First operand 2906 states and 3248 transitions. Second operand 7 states. [2020-09-25 14:41:06,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:06,826 INFO L93 Difference]: Finished difference Result 6738 states and 7683 transitions. [2020-09-25 14:41:06,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:41:06,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-09-25 14:41:06,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:06,844 INFO L225 Difference]: With dead ends: 6738 [2020-09-25 14:41:06,844 INFO L226 Difference]: Without dead ends: 3854 [2020-09-25 14:41:06,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:41:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2020-09-25 14:41:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3824. [2020-09-25 14:41:06,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3824 states. [2020-09-25 14:41:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 4232 transitions. [2020-09-25 14:41:06,957 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 4232 transitions. Word has length 204 [2020-09-25 14:41:06,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:06,957 INFO L479 AbstractCegarLoop]: Abstraction has 3824 states and 4232 transitions. [2020-09-25 14:41:06,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:06,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 4232 transitions. [2020-09-25 14:41:06,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 14:41:06,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:06,968 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:41:06,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:41:06,968 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:06,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:06,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1357916067, now seen corresponding path program 1 times [2020-09-25 14:41:06,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:06,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894795401] [2020-09-25 14:41:06,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:07,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:10,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:10,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 14:41:10,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:41:10,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3930 [2020-09-25 14:41:10,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:10,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:10,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:10,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:41:10,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 14:41:10,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:11,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:11,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:41:11,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:11,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:41:11,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:11,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:11,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:11,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:11,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:11,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:41:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:11,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:11,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:11,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:11,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:41:11,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:11,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:41:11,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:11,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 14:41:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:11,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:11,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 14:41:11,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:11,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 14:41:11,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:11,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 14:41:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:11,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 14:41:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:11,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:11,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:41:11,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:11,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:41:11,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:11,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:41:11,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:11,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 131 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 14:41:11,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894795401] [2020-09-25 14:41:11,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:11,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:41:11,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659913520] [2020-09-25 14:41:11,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:41:11,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:11,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:41:11,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:11,571 INFO L87 Difference]: Start difference. First operand 3824 states and 4232 transitions. Second operand 8 states. [2020-09-25 14:41:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:14,186 INFO L93 Difference]: Finished difference Result 8122 states and 9062 transitions. [2020-09-25 14:41:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:41:14,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2020-09-25 14:41:14,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:14,204 INFO L225 Difference]: With dead ends: 8122 [2020-09-25 14:41:14,205 INFO L226 Difference]: Without dead ends: 4320 [2020-09-25 14:41:14,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:41:14,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4320 states. [2020-09-25 14:41:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4320 to 4296. [2020-09-25 14:41:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2020-09-25 14:41:14,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 4692 transitions. [2020-09-25 14:41:14,313 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 4692 transitions. Word has length 240 [2020-09-25 14:41:14,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:14,313 INFO L479 AbstractCegarLoop]: Abstraction has 4296 states and 4692 transitions. [2020-09-25 14:41:14,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:41:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 4692 transitions. [2020-09-25 14:41:14,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-09-25 14:41:14,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:14,325 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:14,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:41:14,326 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:14,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:14,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1217921601, now seen corresponding path program 1 times [2020-09-25 14:41:14,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:14,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047656144] [2020-09-25 14:41:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:14,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:14,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:14,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking...