/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/Problem10_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:39,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:39,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:39,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:39,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:39,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:39,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:39,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:39,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:39,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:39,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:39,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:39,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:39,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:39,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:39,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:39,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:39,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:39,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:39,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:39,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:39,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:39,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:39,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:39,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:39,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:39,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:39,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:39,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:39,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:39,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:39,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:39,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:39,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:39,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:39,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:39,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:39,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:39,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:39,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:39,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:39,707 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 14:41:39,754 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:39,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:39,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:39,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:39,757 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:39,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:39,757 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:39,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:39,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:39,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:39,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:39,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:39,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:39,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:39,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:39,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:39,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:39,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:39,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:39,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:39,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:39,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:39,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:39,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:39,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:39,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:39,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:39,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:39,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:39,763 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 14:41:40,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:40,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:40,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:40,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:40,265 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:40,267 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 14:41:40,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/846237940/1c3d77850a9444619bc9c8752cd8fe24/FLAG63e5e376c [2020-09-25 14:41:41,011 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:41,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 14:41:41,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/846237940/1c3d77850a9444619bc9c8752cd8fe24/FLAG63e5e376c [2020-09-25 14:41:41,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/846237940/1c3d77850a9444619bc9c8752cd8fe24 [2020-09-25 14:41:41,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:41,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:41,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:41,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:41,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:41,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:41" (1/1) ... [2020-09-25 14:41:41,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:41, skipping insertion in model container [2020-09-25 14:41:41,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:41" (1/1) ... [2020-09-25 14:41:41,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:41,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:41,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:41,820 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:42,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:42,070 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:42,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:42 WrapperNode [2020-09-25 14:41:42,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:42,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:42,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:42,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:42,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:42" (1/1) ... [2020-09-25 14:41:42,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:42" (1/1) ... [2020-09-25 14:41:42,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:42" (1/1) ... [2020-09-25 14:41:42,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:42" (1/1) ... [2020-09-25 14:41:42,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:42" (1/1) ... [2020-09-25 14:41:42,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:42" (1/1) ... [2020-09-25 14:41:42,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:42" (1/1) ... [2020-09-25 14:41:42,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:42,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:42,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:42,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:42,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:42" (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 14:41:42,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:42,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:42,267 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:42,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:42,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:43,645 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:43,645 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:43,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:43 BoogieIcfgContainer [2020-09-25 14:41:43,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:43,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:43,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:43,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:43,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:41" (1/3) ... [2020-09-25 14:41:43,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:43, skipping insertion in model container [2020-09-25 14:41:43,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:42" (2/3) ... [2020-09-25 14:41:43,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14770598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:43, skipping insertion in model container [2020-09-25 14:41:43,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:43" (3/3) ... [2020-09-25 14:41:43,663 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-09-25 14:41:43,674 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:43,686 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:43,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:43,740 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:43,740 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:43,740 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:43,740 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:43,741 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:43,741 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:43,741 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:43,741 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:41:43,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 14:41:43,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:43,783 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] [2020-09-25 14:41:43,784 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:43,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:43,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times [2020-09-25 14:41:43,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:43,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67031033] [2020-09-25 14:41:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:44,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:45,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:45,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 14:41:45,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:41:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1747 [2020-09-25 14:41:45,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:45,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:45,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:41:45,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:41:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:45,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:45,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:45,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:45,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:45,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:41:45,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:45,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:45,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:45,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:45,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:41:45,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:46,060 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 14:41:46,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67031033] [2020-09-25 14:41:46,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:46,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:41:46,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394969505] [2020-09-25 14:41:46,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:41:46,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:46,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:41:46,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:41:46,103 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:41:48,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:48,189 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 14:41:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:48,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-09-25 14:41:48,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:48,221 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 14:41:48,221 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 14:41:48,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 14:41:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 14:41:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 14:41:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 14:41:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 14:41:48,325 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 80 [2020-09-25 14:41:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:48,326 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 14:41:48,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:41:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 14:41:48,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 14:41:48,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:48,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:48,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:48,337 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:48,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:48,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times [2020-09-25 14:41:48,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:48,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182397388] [2020-09-25 14:41:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:48,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:48,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:52,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:52,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 14:41:52,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:52,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4296 [2020-09-25 14:41:52,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:52,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:52,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:41:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:41:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 14:41:52,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:52,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:52,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:52,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:52,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:52,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:52,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:41:52,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:52,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:52,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:41:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:52,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:52,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:52,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:53,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:53,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:53,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:53,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-25 14:41:53,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:53,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:41:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:41:53,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182397388] [2020-09-25 14:41:53,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:53,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:53,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27031787] [2020-09-25 14:41:53,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:53,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:53,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:53,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:53,129 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 14:41:55,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:55,032 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 14:41:55,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:55,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 14:41:55,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:55,040 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 14:41:55,040 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 14:41:55,044 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 14:41:55,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 14:41:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 14:41:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 14:41:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 14:41:55,088 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 159 [2020-09-25 14:41:55,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:55,089 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 14:41:55,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 14:41:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 14:41:55,099 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:55,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:55,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:55,100 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:55,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:55,100 INFO L82 PathProgramCache]: Analyzing trace with hash -663007827, now seen corresponding path program 1 times [2020-09-25 14:41:55,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:55,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452283107] [2020-09-25 14:41:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:55,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:55,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:55,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:55,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:00,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:00,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 14:42:00,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:42:00,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 14:42:00,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:00,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:00,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:42:00,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:00,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 14:42:00,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:00,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:00,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:00,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:00,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:00,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:42:00,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:00,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:00,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:00,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:00,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:00,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:00,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 14:42:00,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:00,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:00,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452283107] [2020-09-25 14:42:00,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:00,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:00,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319007716] [2020-09-25 14:42:00,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:00,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:00,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:00,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:00,563 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 14:42:04,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:04,235 INFO L93 Difference]: Finished difference Result 2012 states and 2641 transitions. [2020-09-25 14:42:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:42:04,236 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-25 14:42:04,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:04,246 INFO L225 Difference]: With dead ends: 2012 [2020-09-25 14:42:04,247 INFO L226 Difference]: Without dead ends: 1482 [2020-09-25 14:42:04,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:42:04,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2020-09-25 14:42:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1365. [2020-09-25 14:42:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1365 states. [2020-09-25 14:42:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1743 transitions. [2020-09-25 14:42:04,307 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1743 transitions. Word has length 169 [2020-09-25 14:42:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:04,308 INFO L479 AbstractCegarLoop]: Abstraction has 1365 states and 1743 transitions. [2020-09-25 14:42:04,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1743 transitions. [2020-09-25 14:42:04,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 14:42:04,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:04,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:04,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:04,314 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:04,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:04,314 INFO L82 PathProgramCache]: Analyzing trace with hash 715941429, now seen corresponding path program 1 times [2020-09-25 14:42:04,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:04,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530679752] [2020-09-25 14:42:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:04,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:05,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:05,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 14:42:05,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:42:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1592 [2020-09-25 14:42:05,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:05,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 14:42:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:42:05,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:06,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:06,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:06,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:06,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:06,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:42:06,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:06,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:06,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:06,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:06,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:06,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:06,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 14:42:06,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:06,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 14:42:06,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:06,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:06,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:06,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:42:06,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:06,230 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:06,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530679752] [2020-09-25 14:42:06,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:06,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:42:06,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968479553] [2020-09-25 14:42:06,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:42:06,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:06,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:42:06,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:06,233 INFO L87 Difference]: Start difference. First operand 1365 states and 1743 transitions. Second operand 5 states. [2020-09-25 14:42:07,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:07,972 INFO L93 Difference]: Finished difference Result 3353 states and 4453 transitions. [2020-09-25 14:42:07,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:42:07,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-25 14:42:07,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:07,995 INFO L225 Difference]: With dead ends: 3353 [2020-09-25 14:42:07,996 INFO L226 Difference]: Without dead ends: 2153 [2020-09-25 14:42:08,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:42:08,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2020-09-25 14:42:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2129. [2020-09-25 14:42:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2129 states. [2020-09-25 14:42:08,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 2598 transitions. [2020-09-25 14:42:08,109 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 2598 transitions. Word has length 171 [2020-09-25 14:42:08,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:08,109 INFO L479 AbstractCegarLoop]: Abstraction has 2129 states and 2598 transitions. [2020-09-25 14:42:08,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:42:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 2598 transitions. [2020-09-25 14:42:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 14:42:08,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:08,121 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:08,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:08,122 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:08,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:08,123 INFO L82 PathProgramCache]: Analyzing trace with hash -883468643, now seen corresponding path program 1 times [2020-09-25 14:42:08,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:08,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976352184] [2020-09-25 14:42:08,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:08,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:08,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:08,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:09,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:11,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:13,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 14:42:13,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:42:13,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 14:42:13,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:13,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:13,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:42:13,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:13,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 14:42:13,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:13,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:13,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:13,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:13,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:42:13,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:13,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:13,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:13,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:13,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:13,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:13,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:13,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:13,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 14:42:13,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:13,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:13,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:42:13,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:13,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:13,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:13,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:13,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 14:42:13,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:13,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:13,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:13,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:13,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:42:13,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976352184] [2020-09-25 14:42:13,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:13,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:42:13,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220421624] [2020-09-25 14:42:13,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:42:13,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:13,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:42:13,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:42:13,920 INFO L87 Difference]: Start difference. First operand 2129 states and 2598 transitions. Second operand 9 states. [2020-09-25 14:42:18,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:18,318 INFO L93 Difference]: Finished difference Result 5195 states and 6631 transitions. [2020-09-25 14:42:18,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:42:18,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 248 [2020-09-25 14:42:18,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:18,338 INFO L225 Difference]: With dead ends: 5195 [2020-09-25 14:42:18,339 INFO L226 Difference]: Without dead ends: 3231 [2020-09-25 14:42:18,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:42:18,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2020-09-25 14:42:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3140. [2020-09-25 14:42:18,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3140 states. [2020-09-25 14:42:18,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 3943 transitions. [2020-09-25 14:42:18,447 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 3943 transitions. Word has length 248 [2020-09-25 14:42:18,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:18,448 INFO L479 AbstractCegarLoop]: Abstraction has 3140 states and 3943 transitions. [2020-09-25 14:42:18,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:42:18,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 3943 transitions. [2020-09-25 14:42:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-25 14:42:18,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:18,455 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:18,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:42:18,455 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:18,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:18,456 INFO L82 PathProgramCache]: Analyzing trace with hash 889304234, now seen corresponding path program 1 times [2020-09-25 14:42:18,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:18,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290553159] [2020-09-25 14:42:18,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:18,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:18,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:21,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:21,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:23,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:23,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 14:42:23,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:42:23,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:42:23,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:23,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:42:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 14:42:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 14:42:23,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:23,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:23,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:23,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:23,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:23,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:42:23,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:23,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:23,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:23,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:23,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:23,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:23,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:23,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:23,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:23,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 14:42:23,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:23,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:42:23,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:23,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:42:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:23,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:24,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:42:24,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-25 14:42:24,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:24,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 136 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 14:42:24,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290553159] [2020-09-25 14:42:24,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:24,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:42:24,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797629778] [2020-09-25 14:42:24,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:42:24,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:24,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:42:24,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:42:24,411 INFO L87 Difference]: Start difference. First operand 3140 states and 3943 transitions. Second operand 9 states.