/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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:58,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:58,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:58,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:58,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:58,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:58,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:58,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:58,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:58,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:58,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:58,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:58,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:58,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:58,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:58,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:58,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:58,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:58,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:58,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:58,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:58,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:58,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:58,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:58,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:58,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:58,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:58,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:58,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:58,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:58,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:58,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:58,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:58,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:58,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:58,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:58,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:58,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:58,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:58,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:58,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:58,583 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 14:42:58,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:58,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:58,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:58,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:58,628 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:58,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:58,628 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:58,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:58,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:58,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:58,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:58,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:58,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:58,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:58,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:58,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:58,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:58,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:58,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:58,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:58,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:58,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:58,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:58,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:58,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:58,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:58,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:58,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:58,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:58,634 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 14:42:59,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:59,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:59,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:59,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:59,181 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:59,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 14:42:59,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e5f25f2/a8440c93bd314989b235cc324a1a12b7/FLAGc40c23c24 [2020-09-25 14:42:59,930 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:59,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 14:42:59,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e5f25f2/a8440c93bd314989b235cc324a1a12b7/FLAGc40c23c24 [2020-09-25 14:43:00,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e5f25f2/a8440c93bd314989b235cc324a1a12b7 [2020-09-25 14:43:00,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:43:00,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:43:00,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:00,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:43:00,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:43:00,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:00" (1/1) ... [2020-09-25 14:43:00,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab41b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:00, skipping insertion in model container [2020-09-25 14:43:00,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:00" (1/1) ... [2020-09-25 14:43:00,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:43:00,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:43:00,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:00,876 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:43:01,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:01,031 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:43:01,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:01 WrapperNode [2020-09-25 14:43:01,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:01,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:43:01,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:43:01,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:43:01,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:01" (1/1) ... [2020-09-25 14:43:01,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:01" (1/1) ... [2020-09-25 14:43:01,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:01" (1/1) ... [2020-09-25 14:43:01,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:01" (1/1) ... [2020-09-25 14:43:01,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:01" (1/1) ... [2020-09-25 14:43:01,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:01" (1/1) ... [2020-09-25 14:43:01,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:01" (1/1) ... [2020-09-25 14:43:01,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:43:01,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:43:01,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:43:01,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:43:01,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:01" (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 14:43:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:43:01,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:43:01,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:43:01,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:43:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:43:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:43:01,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:43:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:43:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:43:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:43:01,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:02,995 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:02,996 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:03,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:03 BoogieIcfgContainer [2020-09-25 14:43:03,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:03,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:03,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:03,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:03,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:43:00" (1/3) ... [2020-09-25 14:43:03,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8b6a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:03, skipping insertion in model container [2020-09-25 14:43:03,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:01" (2/3) ... [2020-09-25 14:43:03,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8b6a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:03, skipping insertion in model container [2020-09-25 14:43:03,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:03" (3/3) ... [2020-09-25 14:43:03,023 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label52.c [2020-09-25 14:43:03,035 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:03,047 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:03,070 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:03,103 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:03,103 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:03,103 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:03,103 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:03,104 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:03,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:03,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:03,104 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:03,137 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:43:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 14:43:03,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:03,149 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] [2020-09-25 14:43:03,150 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:03,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:03,158 INFO L82 PathProgramCache]: Analyzing trace with hash 963589103, now seen corresponding path program 1 times [2020-09-25 14:43:03,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:03,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378029361] [2020-09-25 14:43:03,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:03,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:04,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:04,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 14:43:04,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:04,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-09-25 14:43:04,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:04,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:04,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:04,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:43:04,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 14:43:04,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:43:04,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:04,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:04,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:04,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:04,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:04,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:43:04,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:04,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:04,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:04,314 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 14:43:04,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378029361] [2020-09-25 14:43:04,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:04,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:43:04,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350183277] [2020-09-25 14:43:04,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:43:04,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:04,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:43:04,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:43:04,349 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:43:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:06,419 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 14:43:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:43:06,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 14:43:06,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:06,460 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 14:43:06,460 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 14:43:06,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:06,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 14:43:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 14:43:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 14:43:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 14:43:06,567 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 60 [2020-09-25 14:43:06,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:06,568 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 14:43:06,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:43:06,569 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 14:43:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 14:43:06,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:06,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:06,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:06,577 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:06,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:06,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2017301439, now seen corresponding path program 1 times [2020-09-25 14:43:06,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:06,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474189151] [2020-09-25 14:43:06,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:06,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:10,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 14:43:10,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:10,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4133 [2020-09-25 14:43:10,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:10,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:10,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:43:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 14:43:10,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:10,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:10,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:10,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:10,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:43:10,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:10,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:10,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:10,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:10,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:10,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:10,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:11,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:11,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:11,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:11,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 14:43:11,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:11,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:11,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:11,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:11,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:43:11,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:43:11,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474189151] [2020-09-25 14:43:11,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:11,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:43:11,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540988641] [2020-09-25 14:43:11,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:11,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:11,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:11,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:11,134 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 14:43:12,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:12,957 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 14:43:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:43:12,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 14:43:12,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:12,964 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 14:43:12,965 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 14:43:12,968 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 14:43:12,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 14:43:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 14:43:13,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 14:43:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 14:43:13,048 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 139 [2020-09-25 14:43:13,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:13,049 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 14:43:13,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:13,050 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 14:43:13,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 14:43:13,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:13,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:13,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:13,058 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:13,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:13,058 INFO L82 PathProgramCache]: Analyzing trace with hash -273743075, now seen corresponding path program 1 times [2020-09-25 14:43:13,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:13,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084728904] [2020-09-25 14:43:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:13,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:16,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:16,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 14:43:16,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:16,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3897 [2020-09-25 14:43:16,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:16,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:16,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 14:43:16,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:17,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:17,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:17,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:17,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:43:17,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:17,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:17,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:17,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:17,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:17,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:17,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:17,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 14:43:17,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:17,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:17,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:17,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084728904] [2020-09-25 14:43:17,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:17,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:43:17,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073971073] [2020-09-25 14:43:17,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:17,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:17,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:17,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:17,476 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 8 states. [2020-09-25 14:43:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:21,107 INFO L93 Difference]: Finished difference Result 2932 states and 3692 transitions. [2020-09-25 14:43:21,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:43:21,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 14:43:21,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:21,136 INFO L225 Difference]: With dead ends: 2932 [2020-09-25 14:43:21,136 INFO L226 Difference]: Without dead ends: 2098 [2020-09-25 14:43:21,142 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 14:43:21,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2020-09-25 14:43:21,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1983. [2020-09-25 14:43:21,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1983 states. [2020-09-25 14:43:21,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 2445 transitions. [2020-09-25 14:43:21,262 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 2445 transitions. Word has length 149 [2020-09-25 14:43:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:21,264 INFO L479 AbstractCegarLoop]: Abstraction has 1983 states and 2445 transitions. [2020-09-25 14:43:21,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 2445 transitions. [2020-09-25 14:43:21,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 14:43:21,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:21,278 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:21,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:21,279 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:21,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:21,280 INFO L82 PathProgramCache]: Analyzing trace with hash -103369624, now seen corresponding path program 1 times [2020-09-25 14:43:21,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:21,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877713732] [2020-09-25 14:43:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:21,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:21,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:21,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:23,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:25,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:25,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 14:43:25,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:43:25,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4574 [2020-09-25 14:43:25,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:25,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:43:25,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 14:43:25,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:26,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:26,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:26,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:26,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:26,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:43:26,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:26,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:26,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:26,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:26,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:26,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:26,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:26,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:26,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:26,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:26,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 14:43:26,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:26,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:26,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:26,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:26,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:43:26,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:26,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:26,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:26,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:43:26,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:26,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 14:43:26,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:26,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:26,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:26,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:26,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:43:26,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 14:43:26,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877713732] [2020-09-25 14:43:26,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:26,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:43:26,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512861037] [2020-09-25 14:43:26,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:43:26,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:26,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:43:26,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:43:26,353 INFO L87 Difference]: Start difference. First operand 1983 states and 2445 transitions. Second operand 6 states. [2020-09-25 14:43:28,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:28,777 INFO L93 Difference]: Finished difference Result 5340 states and 7110 transitions. [2020-09-25 14:43:28,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:43:28,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 219 [2020-09-25 14:43:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:28,799 INFO L225 Difference]: With dead ends: 5340 [2020-09-25 14:43:28,799 INFO L226 Difference]: Without dead ends: 3372 [2020-09-25 14:43:28,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:28,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2020-09-25 14:43:28,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3350. [2020-09-25 14:43:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3350 states. [2020-09-25 14:43:28,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 4309 transitions. [2020-09-25 14:43:28,924 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 4309 transitions. Word has length 219 [2020-09-25 14:43:28,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:28,925 INFO L479 AbstractCegarLoop]: Abstraction has 3350 states and 4309 transitions. [2020-09-25 14:43:28,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:43:28,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 4309 transitions. [2020-09-25 14:43:28,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 14:43:28,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:28,934 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:28,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:28,934 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:28,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:28,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1582661552, now seen corresponding path program 1 times [2020-09-25 14:43:28,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:28,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048583751] [2020-09-25 14:43:28,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:28,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:31,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:33,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:33,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 14:43:33,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:43:33,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:43:33,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:33,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 14:43:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:43:33,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:34,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:34,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:34,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:34,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:34,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:34,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:43:34,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:34,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:34,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:34,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:34,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:34,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:34,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 14:43:34,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:34,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 14:43:34,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:34,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:34,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:43:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:34,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 14:43:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:34,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:34,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:34,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 14:43:34,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 14:43:34,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:34,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:43:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:43:34,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048583751] [2020-09-25 14:43:34,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:34,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:43:34,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964246137] [2020-09-25 14:43:34,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:34,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:34,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:34,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:34,532 INFO L87 Difference]: Start difference. First operand 3350 states and 4309 transitions. Second operand 7 states. [2020-09-25 14:43:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:37,093 INFO L93 Difference]: Finished difference Result 7218 states and 9477 transitions. [2020-09-25 14:43:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:37,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-09-25 14:43:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:37,120 INFO L225 Difference]: With dead ends: 7218 [2020-09-25 14:43:37,120 INFO L226 Difference]: Without dead ends: 3883 [2020-09-25 14:43:37,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:37,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2020-09-25 14:43:37,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3839. [2020-09-25 14:43:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3839 states. [2020-09-25 14:43:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 4926 transitions. [2020-09-25 14:43:37,249 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 4926 transitions. Word has length 244 [2020-09-25 14:43:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:37,249 INFO L479 AbstractCegarLoop]: Abstraction has 3839 states and 4926 transitions. [2020-09-25 14:43:37,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 4926 transitions. [2020-09-25 14:43:37,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 14:43:37,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:37,258 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:37,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:37,259 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:37,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:37,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1966815502, now seen corresponding path program 1 times [2020-09-25 14:43:37,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:37,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987345107] [2020-09-25 14:43:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:42,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 14:43:42,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:42,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:43:42,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:42,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 14:43:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 14:43:42,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:42,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:42,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:42,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:42,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:42,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:43:42,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:42,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:42,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:42,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:42,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:42,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:42,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 14:43:42,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:42,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 14:43:42,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:42,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:42,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:42,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:42,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 14:43:42,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:42,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 14:43:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:42,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:42,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:42,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 14:43:42,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:42,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 14:43:42,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:42,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:42,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:42,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:43:42,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:43:42,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987345107] [2020-09-25 14:43:42,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:42,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:43:42,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455093947] [2020-09-25 14:43:42,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:42,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:42,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:42,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:42,871 INFO L87 Difference]: Start difference. First operand 3839 states and 4926 transitions. Second operand 7 states. [2020-09-25 14:43:45,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:45,646 INFO L93 Difference]: Finished difference Result 8501 states and 10980 transitions. [2020-09-25 14:43:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:43:45,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-09-25 14:43:45,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:45,671 INFO L225 Difference]: With dead ends: 8501 [2020-09-25 14:43:45,671 INFO L226 Difference]: Without dead ends: 4677 [2020-09-25 14:43:45,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:43:45,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2020-09-25 14:43:45,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 4640. [2020-09-25 14:43:45,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4640 states. [2020-09-25 14:43:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 5883 transitions. [2020-09-25 14:43:45,809 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 5883 transitions. Word has length 254 [2020-09-25 14:43:45,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:45,809 INFO L479 AbstractCegarLoop]: Abstraction has 4640 states and 5883 transitions. [2020-09-25 14:43:45,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 5883 transitions. [2020-09-25 14:43:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 14:43:45,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:45,820 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:45,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:43:45,820 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:45,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:45,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1155493918, now seen corresponding path program 1 times [2020-09-25 14:43:45,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:45,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201507019] [2020-09-25 14:43:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:45,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking...