/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:28:11,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:28:11,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:28:11,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:28:11,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:28:11,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:28:11,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:28:11,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:28:11,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:28:11,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:28:11,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:28:11,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:28:11,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:28:11,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:28:11,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:28:11,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:28:11,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:28:11,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:28:11,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:28:11,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:28:11,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:28:11,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:28:11,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:28:11,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:28:11,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:28:11,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:28:11,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:28:11,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:28:11,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:28:11,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:28:11,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:28:11,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:28:11,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:28:11,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:28:11,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:28:11,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:28:11,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:28:11,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:28:11,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:28:11,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:28:11,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:28:11,664 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 04:28:11,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:28:11,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:28:11,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:28:11,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:28:11,711 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:28:11,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:28:11,711 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:28:11,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:28:11,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:28:11,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:28:11,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:28:11,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:28:11,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:28:11,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:28:11,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:28:11,714 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:28:11,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:28:11,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:28:11,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:28:11,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:28:11,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:28:11,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:11,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:28:11,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:28:11,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:28:11,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:28:11,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:28:11,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:28:11,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:28:11,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:28:12,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:28:12,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:28:12,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:28:12,176 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:28:12,177 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:28:12,178 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label40.c [2020-09-25 04:28:12,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/489a3e28e/931b5a1a7e3f41b4aa72f75c5bc23596/FLAGf82491ce0 [2020-09-25 04:28:12,947 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:28:12,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label40.c [2020-09-25 04:28:12,962 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/489a3e28e/931b5a1a7e3f41b4aa72f75c5bc23596/FLAGf82491ce0 [2020-09-25 04:28:13,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/489a3e28e/931b5a1a7e3f41b4aa72f75c5bc23596 [2020-09-25 04:28:13,176 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:28:13,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:28:13,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:13,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:28:13,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:28:13,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:13" (1/1) ... [2020-09-25 04:28:13,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:13, skipping insertion in model container [2020-09-25 04:28:13,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:13" (1/1) ... [2020-09-25 04:28:13,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:28:13,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:28:13,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:13,736 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:28:13,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:13,998 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:28:13,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:13 WrapperNode [2020-09-25 04:28:13,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:14,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:28:14,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:28:14,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:28:14,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:13" (1/1) ... [2020-09-25 04:28:14,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:13" (1/1) ... [2020-09-25 04:28:14,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:13" (1/1) ... [2020-09-25 04:28:14,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:13" (1/1) ... [2020-09-25 04:28:14,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:13" (1/1) ... [2020-09-25 04:28:14,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:13" (1/1) ... [2020-09-25 04:28:14,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:13" (1/1) ... [2020-09-25 04:28:14,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:28:14,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:28:14,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:28:14,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:28:14,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:13" (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 04:28:14,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:28:14,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:28:14,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:28:14,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:28:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:28:14,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:28:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:28:14,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:28:14,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:28:14,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:28:14,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:28:15,553 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:28:15,553 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:28:15,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:15 BoogieIcfgContainer [2020-09-25 04:28:15,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:28:15,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:28:15,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:28:15,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:28:15,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:28:13" (1/3) ... [2020-09-25 04:28:15,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:15, skipping insertion in model container [2020-09-25 04:28:15,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:13" (2/3) ... [2020-09-25 04:28:15,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:15, skipping insertion in model container [2020-09-25 04:28:15,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:15" (3/3) ... [2020-09-25 04:28:15,574 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label40.c [2020-09-25 04:28:15,586 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:28:15,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:28:15,622 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:28:15,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:28:15,661 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:28:15,661 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:28:15,661 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:28:15,661 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:28:15,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:28:15,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:28:15,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:28:15,696 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:28:15,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-25 04:28:15,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:15,719 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] [2020-09-25 04:28:15,720 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:15,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:15,728 INFO L82 PathProgramCache]: Analyzing trace with hash 632775426, now seen corresponding path program 1 times [2020-09-25 04:28:15,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:15,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829968196] [2020-09-25 04:28:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:16,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:16,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:16,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:19,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:21,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:21,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 04:28:21,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:28:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 04:28:21,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:21,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:28:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 04:28:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:28:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:21,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:21,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:21,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:21,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:28:21,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:21,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:21,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:28:21,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:21,340 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 04:28:21,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829968196] [2020-09-25 04:28:21,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:21,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:28:21,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113384191] [2020-09-25 04:28:21,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:28:21,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:21,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:28:21,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:28:21,375 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:28:23,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:23,968 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 04:28:23,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:28:23,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-09-25 04:28:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:24,001 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 04:28:24,001 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 04:28:24,013 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 04:28:24,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 04:28:24,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 04:28:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 04:28:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 04:28:24,157 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 115 [2020-09-25 04:28:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:24,159 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 04:28:24,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:28:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 04:28:24,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 04:28:24,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:24,171 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:24,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:28:24,171 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:24,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:24,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1507069906, now seen corresponding path program 1 times [2020-09-25 04:28:24,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:24,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420869791] [2020-09-25 04:28:24,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:24,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:24,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:25,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:26,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:29,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:29,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 04:28:29,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:28:29,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:28:29,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:29,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:29,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:28:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 04:28:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:29,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:29,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:29,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:29,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:29,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:28:29,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:29,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:29,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:29,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:29,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:29,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:28:29,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:29,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:29,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:28:29,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:29,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420869791] [2020-09-25 04:28:29,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:29,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 04:28:29,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904748979] [2020-09-25 04:28:29,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:28:29,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:29,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:28:29,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:29,479 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 04:28:32,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:32,454 INFO L93 Difference]: Finished difference Result 2164 states and 2805 transitions. [2020-09-25 04:28:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:28:32,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-09-25 04:28:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:32,472 INFO L225 Difference]: With dead ends: 2164 [2020-09-25 04:28:32,473 INFO L226 Difference]: Without dead ends: 1453 [2020-09-25 04:28:32,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:28:32,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2020-09-25 04:28:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1344. [2020-09-25 04:28:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-09-25 04:28:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1744 transitions. [2020-09-25 04:28:32,543 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1744 transitions. Word has length 133 [2020-09-25 04:28:32,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:32,544 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 1744 transitions. [2020-09-25 04:28:32,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:28:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1744 transitions. [2020-09-25 04:28:32,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 04:28:32,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:32,553 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:28:32,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:28:32,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:32,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:32,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2051843805, now seen corresponding path program 1 times [2020-09-25 04:28:32,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:32,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508661220] [2020-09-25 04:28:32,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:32,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:33,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:33,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:37,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:37,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 04:28:37,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:28:37,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4450 [2020-09-25 04:28:37,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:37,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 04:28:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 04:28:37,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:37,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:37,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:37,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:37,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:37,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:37,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:28:37,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:37,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:37,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:37,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:37,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:37,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:37,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:28:37,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:37,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 04:28:37,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:37,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:37,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:28:37,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:37,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508661220] [2020-09-25 04:28:37,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:37,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:37,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100869200] [2020-09-25 04:28:37,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:37,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:37,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:37,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:37,388 INFO L87 Difference]: Start difference. First operand 1344 states and 1744 transitions. Second operand 5 states. [2020-09-25 04:28:39,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:39,428 INFO L93 Difference]: Finished difference Result 3619 states and 4959 transitions. [2020-09-25 04:28:39,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:39,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 04:28:39,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:39,452 INFO L225 Difference]: With dead ends: 3619 [2020-09-25 04:28:39,452 INFO L226 Difference]: Without dead ends: 2297 [2020-09-25 04:28:39,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 04:28:39,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-09-25 04:28:39,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1957. [2020-09-25 04:28:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-09-25 04:28:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 2508 transitions. [2020-09-25 04:28:39,567 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 2508 transitions. Word has length 139 [2020-09-25 04:28:39,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:39,568 INFO L479 AbstractCegarLoop]: Abstraction has 1957 states and 2508 transitions. [2020-09-25 04:28:39,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 2508 transitions. [2020-09-25 04:28:39,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 04:28:39,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:39,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:28:39,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:28:39,579 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:39,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:39,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1993339391, now seen corresponding path program 1 times [2020-09-25 04:28:39,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:39,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953048522] [2020-09-25 04:28:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:39,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:39,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:39,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:40,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:44,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:44,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 04:28:44,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:28:44,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:28:44,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:44,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:28:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:28:44,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:28:44,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:44,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:44,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:44,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:44,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:28:44,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:44,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:44,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:44,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:44,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:44,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:44,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:44,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:44,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:44,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:28:44,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:44,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:44,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:28:44,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:44,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:28:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:44,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:44,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:28:44,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:44,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 04:28:44,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:44,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:28:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:28:44,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953048522] [2020-09-25 04:28:44,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:44,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:28:44,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863205477] [2020-09-25 04:28:44,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:44,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:44,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:44,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:44,857 INFO L87 Difference]: Start difference. First operand 1957 states and 2508 transitions. Second operand 7 states. [2020-09-25 04:28:46,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:46,245 INFO L93 Difference]: Finished difference Result 3900 states and 5169 transitions. [2020-09-25 04:28:46,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:28:46,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 04:28:46,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:46,259 INFO L225 Difference]: With dead ends: 3900 [2020-09-25 04:28:46,260 INFO L226 Difference]: Without dead ends: 1965 [2020-09-25 04:28:46,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:28:46,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-09-25 04:28:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1864. [2020-09-25 04:28:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1864 states. [2020-09-25 04:28:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2356 transitions. [2020-09-25 04:28:46,332 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2356 transitions. Word has length 152 [2020-09-25 04:28:46,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:46,333 INFO L479 AbstractCegarLoop]: Abstraction has 1864 states and 2356 transitions. [2020-09-25 04:28:46,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:28:46,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2356 transitions. [2020-09-25 04:28:46,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 04:28:46,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:46,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:46,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:28:46,342 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:46,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:46,342 INFO L82 PathProgramCache]: Analyzing trace with hash 261324474, now seen corresponding path program 1 times [2020-09-25 04:28:46,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:46,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230166533] [2020-09-25 04:28:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:46,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:46,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:46,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:47,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:48,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:51,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:51,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 04:28:51,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:28:51,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:28:51,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:51,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:51,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 04:28:51,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 04:28:51,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:51,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:51,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:51,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:51,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:51,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:28:51,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:51,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:51,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:51,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:51,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:51,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:51,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:51,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:28:51,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:28:51,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:51,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:28:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:28:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:51,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230166533] [2020-09-25 04:28:51,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:51,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:51,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370230571] [2020-09-25 04:28:51,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:51,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:51,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:51,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:51,655 INFO L87 Difference]: Start difference. First operand 1864 states and 2356 transitions. Second operand 5 states. [2020-09-25 04:28:53,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:53,528 INFO L93 Difference]: Finished difference Result 4358 states and 5606 transitions. [2020-09-25 04:28:53,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:53,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 04:28:53,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:53,540 INFO L225 Difference]: With dead ends: 4358 [2020-09-25 04:28:53,540 INFO L226 Difference]: Without dead ends: 1853 [2020-09-25 04:28:53,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 04:28:53,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2020-09-25 04:28:53,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1813. [2020-09-25 04:28:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-09-25 04:28:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2233 transitions. [2020-09-25 04:28:53,606 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2233 transitions. Word has length 153 [2020-09-25 04:28:53,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:53,606 INFO L479 AbstractCegarLoop]: Abstraction has 1813 states and 2233 transitions. [2020-09-25 04:28:53,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2233 transitions. [2020-09-25 04:28:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 04:28:53,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:53,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:28:53,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:53,615 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:53,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:53,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1166216736, now seen corresponding path program 1 times [2020-09-25 04:28:53,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:53,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534405403] [2020-09-25 04:28:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:53,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:53,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:54,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:57,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 04:28:57,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:28:57,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3462 [2020-09-25 04:28:57,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:57,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 04:28:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 04:28:57,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:57,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:57,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:57,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:57,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:57,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:28:57,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:57,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:57,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:57,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:57,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:57,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:57,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 04:28:57,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 04:28:57,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:57,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:57,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 04:28:57,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:57,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534405403] [2020-09-25 04:28:57,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:57,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:57,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873780313] [2020-09-25 04:28:57,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:57,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:57,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:57,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:57,426 INFO L87 Difference]: Start difference. First operand 1813 states and 2233 transitions. Second operand 5 states.