/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_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:39:33,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:39:33,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:39:33,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:39:33,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:39:33,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:39:33,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:39:33,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:39:33,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:39:33,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:39:33,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:39:33,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:39:33,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:39:33,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:39:33,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:39:33,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:39:33,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:39:33,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:39:33,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:39:33,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:39:33,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:39:33,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:39:33,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:39:33,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:39:33,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:39:33,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:39:33,456 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:39:33,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:39:33,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:39:33,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:39:33,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:39:33,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:39:33,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:39:33,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:39:33,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:39:33,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:39:33,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:39:33,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:39:33,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:39:33,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:39:33,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:39:33,471 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 14:39:33,521 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:39:33,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:39:33,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:39:33,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:39:33,525 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:39:33,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:39:33,526 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:39:33,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:39:33,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:39:33,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:39:33,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:39:33,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:39:33,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:39:33,528 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:39:33,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:39:33,529 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:39:33,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:39:33,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:39:33,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:39:33,530 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:39:33,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:39:33,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:39:33,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:39:33,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:39:33,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:39:33,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:39:33,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:39:33,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:39:33,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:39:33,532 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 14:39:33,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:39:34,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:39:34,021 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:39:34,023 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:39:34,023 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:39:34,025 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label28.c [2020-09-25 14:39:34,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37c8095f2/7dcfb319ec124c7e9827783dde35000e/FLAG822a0af2a [2020-09-25 14:39:34,794 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:39:34,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label28.c [2020-09-25 14:39:34,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37c8095f2/7dcfb319ec124c7e9827783dde35000e/FLAG822a0af2a [2020-09-25 14:39:35,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37c8095f2/7dcfb319ec124c7e9827783dde35000e [2020-09-25 14:39:35,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:39:35,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:39:35,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:39:35,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:39:35,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:39:35,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:39:35" (1/1) ... [2020-09-25 14:39:35,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:35, skipping insertion in model container [2020-09-25 14:39:35,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:39:35" (1/1) ... [2020-09-25 14:39:35,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:39:35,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:39:35,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:39:35,606 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:39:35,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:39:35,915 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:39:35,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:35 WrapperNode [2020-09-25 14:39:35,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:39:35,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:39:35,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:39:35,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:39:35,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:35" (1/1) ... [2020-09-25 14:39:35,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:35" (1/1) ... [2020-09-25 14:39:35,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:35" (1/1) ... [2020-09-25 14:39:35,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:35" (1/1) ... [2020-09-25 14:39:36,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:35" (1/1) ... [2020-09-25 14:39:36,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:35" (1/1) ... [2020-09-25 14:39:36,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:35" (1/1) ... [2020-09-25 14:39:36,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:39:36,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:39:36,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:39:36,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:39:36,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:35" (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 14:39:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:39:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:39:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:39:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:39:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:39:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:39:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:39:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:39:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:39:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:39:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:39:37,669 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:39:37,670 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:39:37,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:39:37 BoogieIcfgContainer [2020-09-25 14:39:37,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:39:37,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:39:37,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:39:37,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:39:37,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:39:35" (1/3) ... [2020-09-25 14:39:37,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:39:37, skipping insertion in model container [2020-09-25 14:39:37,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:39:35" (2/3) ... [2020-09-25 14:39:37,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:39:37, skipping insertion in model container [2020-09-25 14:39:37,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:39:37" (3/3) ... [2020-09-25 14:39:37,691 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label28.c [2020-09-25 14:39:37,704 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:39:37,717 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:39:37,743 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:39:37,784 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:39:37,784 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:39:37,784 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:39:37,784 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:39:37,784 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:39:37,785 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:39:37,785 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:39:37,785 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:39:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:39:37,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 14:39:37,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:37,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:39:37,845 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:37,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:37,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1105966209, now seen corresponding path program 1 times [2020-09-25 14:39:37,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:37,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840094341] [2020-09-25 14:39:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:38,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:39,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:39,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:40,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:40,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:43,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:43,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 14:39:43,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:39:43,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:39:43,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:43,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:39:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:39:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 14:39:43,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:39:43,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:43,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:43,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:43,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:43,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:39:43,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:43,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:43,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:43,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:39:43,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:43,550 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 14:39:43,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840094341] [2020-09-25 14:39:43,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:39:43,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:39:43,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556438218] [2020-09-25 14:39:43,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:39:43,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:43,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:39:43,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:39:43,588 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:39:45,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:39:45,828 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 14:39:45,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:39:45,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 14:39:45,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:39:45,858 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 14:39:45,858 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 14:39:45,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:39:45,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 14:39:45,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 14:39:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 14:39:45,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-25 14:39:45,976 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 150 [2020-09-25 14:39:45,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:39:45,977 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-25 14:39:45,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:39:45,977 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-25 14:39:45,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 14:39:45,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:45,985 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:39:45,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:39:45,986 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash -513304486, now seen corresponding path program 1 times [2020-09-25 14:39:45,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:45,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997294279] [2020-09-25 14:39:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:46,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:46,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:47,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:50,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:51,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:51,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 14:39:51,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:39:51,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:39:51,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:51,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:39:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 14:39:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 14:39:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:39:51,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:51,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:51,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:51,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:51,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:51,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:39:51,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:51,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:51,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 14:39:51,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:39:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:51,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:51,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:51,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 14:39:51,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:51,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:39:51,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:51,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:51,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:51,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:39:51,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:39:51,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997294279] [2020-09-25 14:39:51,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:39:51,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:39:51,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024301984] [2020-09-25 14:39:51,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:39:51,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:51,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:39:51,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:39:51,415 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 5 states. [2020-09-25 14:39:53,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:39:53,812 INFO L93 Difference]: Finished difference Result 1627 states and 2137 transitions. [2020-09-25 14:39:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:39:53,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-09-25 14:39:53,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:39:53,822 INFO L225 Difference]: With dead ends: 1627 [2020-09-25 14:39:53,822 INFO L226 Difference]: Without dead ends: 1036 [2020-09-25 14:39:53,826 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 14:39:53,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-09-25 14:39:53,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 923. [2020-09-25 14:39:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-09-25 14:39:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1195 transitions. [2020-09-25 14:39:53,873 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1195 transitions. Word has length 176 [2020-09-25 14:39:53,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:39:53,874 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1195 transitions. [2020-09-25 14:39:53,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:39:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1195 transitions. [2020-09-25 14:39:53,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 14:39:53,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:39:53,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:39:53,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:39:53,880 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:39:53,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:39:53,881 INFO L82 PathProgramCache]: Analyzing trace with hash 771207420, now seen corresponding path program 1 times [2020-09-25 14:39:53,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:39:53,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804452194] [2020-09-25 14:39:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:39:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:53,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:57,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:57,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:58,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:58,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 14:39:58,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:39:58,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:39:58,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:58,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:39:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 14:39:58,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 14:39:58,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:59,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:39:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:59,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:59,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:39:59,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:39:59,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:59,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:39:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:39:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:59,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:39:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:39:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:39:59,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:39:59,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:39:59,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:39:59,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 14:39:59,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:39:59,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:39:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:39:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:39:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:39:59,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:39:59,210 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 14:39:59,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804452194] [2020-09-25 14:39:59,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:39:59,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:39:59,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915534558] [2020-09-25 14:39:59,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:39:59,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:39:59,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:39:59,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:39:59,214 INFO L87 Difference]: Start difference. First operand 923 states and 1195 transitions. Second operand 5 states. [2020-09-25 14:40:01,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:01,409 INFO L93 Difference]: Finished difference Result 2469 states and 3360 transitions. [2020-09-25 14:40:01,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:01,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-09-25 14:40:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:01,426 INFO L225 Difference]: With dead ends: 2469 [2020-09-25 14:40:01,430 INFO L226 Difference]: Without dead ends: 1568 [2020-09-25 14:40:01,444 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 14:40:01,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-09-25 14:40:01,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1531. [2020-09-25 14:40:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1531 states. [2020-09-25 14:40:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2069 transitions. [2020-09-25 14:40:01,527 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2069 transitions. Word has length 184 [2020-09-25 14:40:01,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:01,528 INFO L479 AbstractCegarLoop]: Abstraction has 1531 states and 2069 transitions. [2020-09-25 14:40:01,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2069 transitions. [2020-09-25 14:40:01,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 14:40:01,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:01,540 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:40:01,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:40:01,541 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:01,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:01,544 INFO L82 PathProgramCache]: Analyzing trace with hash 624826527, now seen corresponding path program 1 times [2020-09-25 14:40:01,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:01,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797372555] [2020-09-25 14:40:01,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:01,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:02,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:02,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:02,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:03,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:04,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:05,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:06,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:06,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:06,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-25 14:40:06,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:40:06,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:40:06,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:06,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:06,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 14:40:06,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:40:06,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-09-25 14:40:06,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:06,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:06,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:06,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:06,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:06,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 14:40:06,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:06,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:06,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:06,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:40:06,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:06,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:07,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:07,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:07,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:07,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:07,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:40:07,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:40:07,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-25 14:40:07,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:07,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:40:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 14:40:07,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:07,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797372555] [2020-09-25 14:40:07,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:07,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:40:07,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37565203] [2020-09-25 14:40:07,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:40:07,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:07,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:40:07,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:40:07,782 INFO L87 Difference]: Start difference. First operand 1531 states and 2069 transitions. Second operand 13 states. [2020-09-25 14:40:12,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:12,702 INFO L93 Difference]: Finished difference Result 4807 states and 6748 transitions. [2020-09-25 14:40:12,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 14:40:12,703 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 235 [2020-09-25 14:40:12,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:12,729 INFO L225 Difference]: With dead ends: 4807 [2020-09-25 14:40:12,729 INFO L226 Difference]: Without dead ends: 3132 [2020-09-25 14:40:12,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2020-09-25 14:40:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2020-09-25 14:40:12,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3020. [2020-09-25 14:40:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3020 states. [2020-09-25 14:40:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 3950 transitions. [2020-09-25 14:40:12,865 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 3950 transitions. Word has length 235 [2020-09-25 14:40:12,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:12,866 INFO L479 AbstractCegarLoop]: Abstraction has 3020 states and 3950 transitions. [2020-09-25 14:40:12,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:40:12,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 3950 transitions. [2020-09-25 14:40:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-09-25 14:40:12,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:12,882 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:12,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:40:12,882 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:12,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1958973799, now seen corresponding path program 1 times [2020-09-25 14:40:12,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:12,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244450060] [2020-09-25 14:40:12,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:12,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:13,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:13,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:13,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:17,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:17,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-09-25 14:40:17,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:40:17,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:40:17,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:17,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 14:40:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:40:17,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:18,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:18,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:18,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:18,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:18,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:40:18,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:18,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:18,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:18,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:40:18,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:18,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:40:18,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:18,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:18,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:18,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:40:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:18,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 14:40:18,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:18,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:40:18,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:18,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:18,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 14:40:18,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:18,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 14:40:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:18,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:18,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:18,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 14:40:18,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:18,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 14:40:18,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:18,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:18,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:40:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 14:40:18,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:40:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 14:40:18,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244450060] [2020-09-25 14:40:18,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:18,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:40:18,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649758194] [2020-09-25 14:40:18,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:40:18,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:18,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:40:18,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:40:18,344 INFO L87 Difference]: Start difference. First operand 3020 states and 3950 transitions. Second operand 7 states. [2020-09-25 14:40:20,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:20,873 INFO L93 Difference]: Finished difference Result 6580 states and 8882 transitions. [2020-09-25 14:40:20,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:40:20,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2020-09-25 14:40:20,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:20,894 INFO L225 Difference]: With dead ends: 6580 [2020-09-25 14:40:20,895 INFO L226 Difference]: Without dead ends: 3732 [2020-09-25 14:40:20,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:40:20,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2020-09-25 14:40:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 2762. [2020-09-25 14:40:20,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2020-09-25 14:40:21,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 3512 transitions. [2020-09-25 14:40:21,008 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 3512 transitions. Word has length 276 [2020-09-25 14:40:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:21,009 INFO L479 AbstractCegarLoop]: Abstraction has 2762 states and 3512 transitions. [2020-09-25 14:40:21,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:40:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 3512 transitions. [2020-09-25 14:40:21,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-25 14:40:21,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:21,022 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:21,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:40:21,023 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:21,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:21,023 INFO L82 PathProgramCache]: Analyzing trace with hash -269629396, now seen corresponding path program 1 times [2020-09-25 14:40:21,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:21,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981710765] [2020-09-25 14:40:21,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:21,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:21,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:21,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:21,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:22,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking...