/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=0.3 --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/Problem10_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:06,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:06,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:06,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:06,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:06,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:06,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:06,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:06,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:06,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:06,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:06,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:06,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:06,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:06,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:06,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:06,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:06,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:06,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:06,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:06,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:06,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:06,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:06,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:06,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:06,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:06,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:06,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:06,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:06,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:06,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:06,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:06,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:06,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:06,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:06,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:06,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:06,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:06,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:06,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:06,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:06,467 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 12:27:06,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:06,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:06,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:06,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:06,493 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:06,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:06,494 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:06,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:06,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:06,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:06,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:06,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:06,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:06,495 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:06,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:06,496 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:06,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:06,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:06,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:06,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:06,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:06,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:06,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:06,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:06,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:06,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:06,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:06,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:06,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:06,499 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:27:06,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:06,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:06,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:06,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:06,987 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:06,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 12:27:07,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e39ea5e3/c8bb5bf09ae54c9cae3b7fda53d5278e/FLAG6cac6c6fc [2020-09-25 12:27:07,695 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:07,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-09-25 12:27:07,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e39ea5e3/c8bb5bf09ae54c9cae3b7fda53d5278e/FLAG6cac6c6fc [2020-09-25 12:27:07,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e39ea5e3/c8bb5bf09ae54c9cae3b7fda53d5278e [2020-09-25 12:27:07,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:07,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:07,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:07,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:07,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:07,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:07" (1/1) ... [2020-09-25 12:27:07,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:07, skipping insertion in model container [2020-09-25 12:27:07,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:07" (1/1) ... [2020-09-25 12:27:07,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:08,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:08,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:08,523 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:08,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:08,759 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:08,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:08 WrapperNode [2020-09-25 12:27:08,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:08,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:08,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:08,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:08,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:08" (1/1) ... [2020-09-25 12:27:08,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:08" (1/1) ... [2020-09-25 12:27:08,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:08" (1/1) ... [2020-09-25 12:27:08,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:08" (1/1) ... [2020-09-25 12:27:08,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:08" (1/1) ... [2020-09-25 12:27:08,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:08" (1/1) ... [2020-09-25 12:27:08,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:08" (1/1) ... [2020-09-25 12:27:08,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:08,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:08,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:08,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:08,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:08" (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 12:27:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:08,991 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:08,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:08,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:10,311 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:10,312 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:10,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:10 BoogieIcfgContainer [2020-09-25 12:27:10,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:10,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:10,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:10,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:10,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:07" (1/3) ... [2020-09-25 12:27:10,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c5de47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:10, skipping insertion in model container [2020-09-25 12:27:10,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:08" (2/3) ... [2020-09-25 12:27:10,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c5de47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:10, skipping insertion in model container [2020-09-25 12:27:10,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:10" (3/3) ... [2020-09-25 12:27:10,330 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label38.c [2020-09-25 12:27:10,341 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:10,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:10,374 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:10,408 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:10,409 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:10,409 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:10,409 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:10,409 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:10,409 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:10,410 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:10,410 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:27:10,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:27:10,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:10,453 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] [2020-09-25 12:27:10,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:10,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1024488521, now seen corresponding path program 1 times [2020-09-25 12:27:10,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:10,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866112816] [2020-09-25 12:27:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:11,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 12:27:11,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:27:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-09-25 12:27:11,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:11,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:11,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:27:11,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:27:11,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:11,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:11,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:11,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:11,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:11,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:27:11,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:11,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:11,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:11,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:11,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:11,678 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 12:27:11,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866112816] [2020-09-25 12:27:11,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:11,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:27:11,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836870397] [2020-09-25 12:27:11,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:27:11,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:11,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:27:11,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:11,710 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 12:27:14,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:14,409 INFO L93 Difference]: Finished difference Result 1256 states and 1826 transitions. [2020-09-25 12:27:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:27:14,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-09-25 12:27:14,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:14,440 INFO L225 Difference]: With dead ends: 1256 [2020-09-25 12:27:14,441 INFO L226 Difference]: Without dead ends: 737 [2020-09-25 12:27:14,454 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 12:27:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-09-25 12:27:14,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 697. [2020-09-25 12:27:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 12:27:14,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 864 transitions. [2020-09-25 12:27:14,557 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 864 transitions. Word has length 51 [2020-09-25 12:27:14,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:14,558 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 864 transitions. [2020-09-25 12:27:14,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:27:14,559 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 864 transitions. [2020-09-25 12:27:14,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 12:27:14,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:14,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:14,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:14,568 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:14,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:14,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1234177337, now seen corresponding path program 1 times [2020-09-25 12:27:14,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:14,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901200310] [2020-09-25 12:27:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:14,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:19,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 12:27:19,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:27:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 12:27:19,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:19,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 12:27:19,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:19,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:19,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:19,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:19,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:19,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:27:19,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:19,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:19,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:19,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:19,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:19,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:19,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:19,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:20,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:20,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:27:20,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:20,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 12:27:20,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:20,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 12:27:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:27:20,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901200310] [2020-09-25 12:27:20,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:20,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:27:20,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719596039] [2020-09-25 12:27:20,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:27:20,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:20,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:27:20,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:20,194 INFO L87 Difference]: Start difference. First operand 697 states and 864 transitions. Second operand 5 states. [2020-09-25 12:27:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:21,798 INFO L93 Difference]: Finished difference Result 1845 states and 2386 transitions. [2020-09-25 12:27:21,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:27:21,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 12:27:21,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:21,808 INFO L225 Difference]: With dead ends: 1845 [2020-09-25 12:27:21,809 INFO L226 Difference]: Without dead ends: 1163 [2020-09-25 12:27:21,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:27:21,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-25 12:27:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1153. [2020-09-25 12:27:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2020-09-25 12:27:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1446 transitions. [2020-09-25 12:27:21,871 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1446 transitions. Word has length 147 [2020-09-25 12:27:21,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:21,876 INFO L479 AbstractCegarLoop]: Abstraction has 1153 states and 1446 transitions. [2020-09-25 12:27:21,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:27:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1446 transitions. [2020-09-25 12:27:21,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 12:27:21,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:21,893 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:27:21,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:27:21,893 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:21,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:21,894 INFO L82 PathProgramCache]: Analyzing trace with hash 731940114, now seen corresponding path program 1 times [2020-09-25 12:27:21,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:21,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076374538] [2020-09-25 12:27:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:22,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:27,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 12:27:27,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:27:27,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 12:27:27,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:27,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 12:27:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 12:27:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:27,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:27,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:27,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:27,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:27,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:27:27,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:27,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:27:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:27,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:27:27,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:27,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:27,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:27:27,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:27,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 12:27:27,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:27,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 12:27:27,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:27,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 12:27:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:27,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:27,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 12:27:27,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:27,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-25 12:27:27,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:27,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 12:27:27,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 121 proven. 31 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:27:27,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076374538] [2020-09-25 12:27:27,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:27,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:27:27,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979844713] [2020-09-25 12:27:27,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:27,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:27,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:27,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:27,826 INFO L87 Difference]: Start difference. First operand 1153 states and 1446 transitions. Second operand 7 states. [2020-09-25 12:27:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:30,335 INFO L93 Difference]: Finished difference Result 2823 states and 3583 transitions. [2020-09-25 12:27:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:27:30,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-09-25 12:27:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:30,345 INFO L225 Difference]: With dead ends: 2823 [2020-09-25 12:27:30,345 INFO L226 Difference]: Without dead ends: 1685 [2020-09-25 12:27:30,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:30,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-09-25 12:27:30,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1502. [2020-09-25 12:27:30,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1502 states. [2020-09-25 12:27:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1859 transitions. [2020-09-25 12:27:30,399 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1859 transitions. Word has length 245 [2020-09-25 12:27:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:30,400 INFO L479 AbstractCegarLoop]: Abstraction has 1502 states and 1859 transitions. [2020-09-25 12:27:30,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:30,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1859 transitions. [2020-09-25 12:27:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 12:27:30,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:30,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:27:30,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:30,410 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:30,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:30,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1115685188, now seen corresponding path program 1 times [2020-09-25 12:27:30,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:30,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819298885] [2020-09-25 12:27:30,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:30,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:34,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:35,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:35,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 12:27:35,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:27:35,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 12:27:35,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:35,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-25 12:27:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 12:27:35,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:35,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:35,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:35,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:35,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:35,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:27:35,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:35,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:27:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:35,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:27:35,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:35,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:35,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:35,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:35,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 12:27:35,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:35,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 12:27:35,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:35,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:35,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:35,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:35,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 12:27:35,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:35,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-25 12:27:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:35,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:35,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:35,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:35,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 12:27:35,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:35,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 12:27:35,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:35,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:35,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:35,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:35,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 12:27:35,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:36,091 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 124 proven. 31 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:27:36,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819298885] [2020-09-25 12:27:36,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:36,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:27:36,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028151473] [2020-09-25 12:27:36,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:27:36,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:36,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:27:36,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:27:36,098 INFO L87 Difference]: Start difference. First operand 1502 states and 1859 transitions. Second operand 6 states. [2020-09-25 12:27:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:38,305 INFO L93 Difference]: Finished difference Result 3825 states and 4811 transitions. [2020-09-25 12:27:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:27:38,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 254 [2020-09-25 12:27:38,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:38,321 INFO L225 Difference]: With dead ends: 3825 [2020-09-25 12:27:38,321 INFO L226 Difference]: Without dead ends: 2338 [2020-09-25 12:27:38,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2020-09-25 12:27:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2291. [2020-09-25 12:27:38,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-09-25 12:27:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 2868 transitions. [2020-09-25 12:27:38,406 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 2868 transitions. Word has length 254 [2020-09-25 12:27:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:38,406 INFO L479 AbstractCegarLoop]: Abstraction has 2291 states and 2868 transitions. [2020-09-25 12:27:38,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:27:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 2868 transitions. [2020-09-25 12:27:38,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 12:27:38,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:38,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:27:38,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:27:38,415 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:38,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:38,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1950613258, now seen corresponding path program 1 times [2020-09-25 12:27:38,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:38,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495904798] [2020-09-25 12:27:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:38,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:38,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:39,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:41,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:43,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-09-25 12:27:43,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:27:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:27:43,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:43,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:43,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-25 12:27:43,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:43,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:43,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:43,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:43,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:43,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:27:43,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:43,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:43,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:43,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:43,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:43,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:43,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 12:27:43,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:43,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:43,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:43,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:43,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:27:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:43,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:44,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:44,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 12:27:44,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:44,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-25 12:27:44,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:44,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:44,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 12:27:44,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 12:27:44,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495904798] [2020-09-25 12:27:44,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:44,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:27:44,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647386395] [2020-09-25 12:27:44,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:27:44,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:44,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:27:44,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:27:44,510 INFO L87 Difference]: Start difference. First operand 2291 states and 2868 transitions. Second operand 9 states. [2020-09-25 12:27:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:48,501 INFO L93 Difference]: Finished difference Result 6191 states and 8593 transitions. [2020-09-25 12:27:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:27:48,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 275 [2020-09-25 12:27:48,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:48,529 INFO L225 Difference]: With dead ends: 6191 [2020-09-25 12:27:48,530 INFO L226 Difference]: Without dead ends: 4065 [2020-09-25 12:27:48,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:27:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2020-09-25 12:27:48,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 3750. [2020-09-25 12:27:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3750 states. [2020-09-25 12:27:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 4933 transitions. [2020-09-25 12:27:48,659 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 4933 transitions. Word has length 275 [2020-09-25 12:27:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:48,660 INFO L479 AbstractCegarLoop]: Abstraction has 3750 states and 4933 transitions. [2020-09-25 12:27:48,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:27:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 4933 transitions. [2020-09-25 12:27:48,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-09-25 12:27:48,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:48,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:27:48,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:27:48,671 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:48,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1654703250, now seen corresponding path program 1 times [2020-09-25 12:27:48,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:48,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175871973] [2020-09-25 12:27:48,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:48,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:48,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:49,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:49,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking...