/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=0.4 --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_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:22,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:22,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:22,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:22,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:22,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:22,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:22,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:22,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:22,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:22,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:22,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:22,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:22,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:22,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:22,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:22,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:22,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:22,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:22,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:22,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:22,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:22,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:22,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:22,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:22,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:22,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:22,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:22,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:22,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:22,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:22,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:22,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:22,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:22,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:22,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:22,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:22,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:22,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:22,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:22,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:22,093 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 05:39:22,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:22,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:22,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:22,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:22,122 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:22,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:22,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:22,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:22,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:22,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:22,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:22,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:22,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:22,123 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:22,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:22,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:22,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:22,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:22,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:22,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:22,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:22,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:22,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:22,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:22,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:22,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:22,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:22,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:22,126 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:22,127 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:39:22,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:22,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:22,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:22,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:22,608 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:22,609 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 05:39:22,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41d7e9a79/d211f4c17e6d47f8a2e87910724b1043/FLAG6da7fcc22 [2020-09-25 05:39:23,368 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:23,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-09-25 05:39:23,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41d7e9a79/d211f4c17e6d47f8a2e87910724b1043/FLAG6da7fcc22 [2020-09-25 05:39:23,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41d7e9a79/d211f4c17e6d47f8a2e87910724b1043 [2020-09-25 05:39:23,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:23,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:23,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:23,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:23,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:23,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:23" (1/1) ... [2020-09-25 05:39:23,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d85ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:23, skipping insertion in model container [2020-09-25 05:39:23,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:23" (1/1) ... [2020-09-25 05:39:23,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:23,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:24,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:24,150 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:24,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:24,426 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:24,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:24 WrapperNode [2020-09-25 05:39:24,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:24,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:24,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:24,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:24,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:24" (1/1) ... [2020-09-25 05:39:24,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:24" (1/1) ... [2020-09-25 05:39:24,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:24" (1/1) ... [2020-09-25 05:39:24,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:24" (1/1) ... [2020-09-25 05:39:24,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:24" (1/1) ... [2020-09-25 05:39:24,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:24" (1/1) ... [2020-09-25 05:39:24,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:24" (1/1) ... [2020-09-25 05:39:24,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:24,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:24,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:24,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:24,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:24" (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 05:39:24,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:24,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:24,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:26,227 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:26,227 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:26,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:26 BoogieIcfgContainer [2020-09-25 05:39:26,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:26,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:26,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:26,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:26,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:23" (1/3) ... [2020-09-25 05:39:26,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fd4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:26, skipping insertion in model container [2020-09-25 05:39:26,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:24" (2/3) ... [2020-09-25 05:39:26,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fd4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:26, skipping insertion in model container [2020-09-25 05:39:26,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:26" (3/3) ... [2020-09-25 05:39:26,246 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-09-25 05:39:26,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:26,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:26,292 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:26,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:26,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:26,328 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:26,328 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:26,328 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:26,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:26,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:26,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:39:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 05:39:26,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:26,373 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] [2020-09-25 05:39:26,373 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:26,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:26,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1037847345, now seen corresponding path program 1 times [2020-09-25 05:39:26,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:26,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856127885] [2020-09-25 05:39:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:26,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:26,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:27,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:27,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 05:39:27,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:27,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-09-25 05:39:27,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:27,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:39:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 05:39:27,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:39:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:27,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:27,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:27,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:27,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:27,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:39:27,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:27,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:27,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:39:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:27,902 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 05:39:27,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856127885] [2020-09-25 05:39:27,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:27,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:39:27,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338186515] [2020-09-25 05:39:27,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:39:27,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:27,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:39:27,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:39:27,941 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:39:30,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:30,188 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 05:39:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:39:30,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-09-25 05:39:30,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:30,226 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 05:39:30,227 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 05:39:30,237 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 05:39:30,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 05:39:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 05:39:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 05:39:30,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 05:39:30,339 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 57 [2020-09-25 05:39:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:30,340 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 05:39:30,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:39:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 05:39:30,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 05:39:30,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:30,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:30,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:30,350 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:30,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:30,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1358485705, now seen corresponding path program 1 times [2020-09-25 05:39:30,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:30,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132115324] [2020-09-25 05:39:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:30,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:30,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:32,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:35,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 05:39:35,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:35,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:39:35,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:35,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:39:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:39:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 05:39:35,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:35,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:35,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:35,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:35,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:35,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:39:35,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:35,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:39:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:35,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:35,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:35,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:39:35,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 05:39:35,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:35,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:35,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:35,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:39:35,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:36,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132115324] [2020-09-25 05:39:36,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:36,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 05:39:36,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153733695] [2020-09-25 05:39:36,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 05:39:36,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:36,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 05:39:36,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 05:39:36,062 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 10 states. [2020-09-25 05:39:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:39,547 INFO L93 Difference]: Finished difference Result 1663 states and 2149 transitions. [2020-09-25 05:39:39,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:39:39,550 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2020-09-25 05:39:39,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:39,557 INFO L225 Difference]: With dead ends: 1663 [2020-09-25 05:39:39,557 INFO L226 Difference]: Without dead ends: 1083 [2020-09-25 05:39:39,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:39:39,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-09-25 05:39:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1032. [2020-09-25 05:39:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-09-25 05:39:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1253 transitions. [2020-09-25 05:39:39,612 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1253 transitions. Word has length 140 [2020-09-25 05:39:39,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:39,637 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1253 transitions. [2020-09-25 05:39:39,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 05:39:39,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1253 transitions. [2020-09-25 05:39:39,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 05:39:39,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:39,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:39,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:39:39,647 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:39,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:39,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1711199918, now seen corresponding path program 1 times [2020-09-25 05:39:39,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:39,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600683872] [2020-09-25 05:39:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:39,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:40,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:41,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:44,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:44,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 05:39:44,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:39:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4791 [2020-09-25 05:39:44,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:44,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:44,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 05:39:44,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 05:39:44,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:44,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:44,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:44,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:44,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:44,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:44,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:39:44,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:44,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:44,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:44,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:44,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:44,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:44,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:44,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:44,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:44,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:44,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 05:39:44,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:44,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:44,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:44,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:44,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:39:44,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:44,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600683872] [2020-09-25 05:39:44,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:44,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:39:44,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335937044] [2020-09-25 05:39:44,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:39:44,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:44,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:39:44,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:44,761 INFO L87 Difference]: Start difference. First operand 1032 states and 1253 transitions. Second operand 6 states. [2020-09-25 05:39:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:46,721 INFO L93 Difference]: Finished difference Result 1956 states and 2546 transitions. [2020-09-25 05:39:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:46,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-09-25 05:39:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:46,739 INFO L225 Difference]: With dead ends: 1956 [2020-09-25 05:39:46,739 INFO L226 Difference]: Without dead ends: 1954 [2020-09-25 05:39:46,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 05:39:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-09-25 05:39:46,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1342. [2020-09-25 05:39:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2020-09-25 05:39:46,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1739 transitions. [2020-09-25 05:39:46,827 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1739 transitions. Word has length 140 [2020-09-25 05:39:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:46,830 INFO L479 AbstractCegarLoop]: Abstraction has 1342 states and 1739 transitions. [2020-09-25 05:39:46,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:46,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1739 transitions. [2020-09-25 05:39:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 05:39:46,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:46,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:46,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:39:46,835 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:46,835 INFO L82 PathProgramCache]: Analyzing trace with hash -861467326, now seen corresponding path program 1 times [2020-09-25 05:39:46,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:46,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962394490] [2020-09-25 05:39:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:46,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:47,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:47,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:47,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:51,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:51,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 05:39:51,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4579 [2020-09-25 05:39:51,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:51,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:51,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:51,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:39:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 05:39:51,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:51,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:51,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:51,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:51,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:39:51,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:51,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:51,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:51,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:51,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:51,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:51,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 05:39:51,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:51,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:39:51,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:51,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962394490] [2020-09-25 05:39:51,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:51,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:39:51,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754105232] [2020-09-25 05:39:51,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:39:51,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:51,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:39:51,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:51,783 INFO L87 Difference]: Start difference. First operand 1342 states and 1739 transitions. Second operand 6 states. [2020-09-25 05:39:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:54,474 INFO L93 Difference]: Finished difference Result 3660 states and 5010 transitions. [2020-09-25 05:39:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:39:54,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 05:39:54,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:54,491 INFO L225 Difference]: With dead ends: 3660 [2020-09-25 05:39:54,491 INFO L226 Difference]: Without dead ends: 2333 [2020-09-25 05:39:54,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 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 05:39:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2020-09-25 05:39:54,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 1966. [2020-09-25 05:39:54,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1966 states. [2020-09-25 05:39:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2666 transitions. [2020-09-25 05:39:54,569 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2666 transitions. Word has length 146 [2020-09-25 05:39:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:54,570 INFO L479 AbstractCegarLoop]: Abstraction has 1966 states and 2666 transitions. [2020-09-25 05:39:54,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:39:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2666 transitions. [2020-09-25 05:39:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 05:39:54,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:54,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:54,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:39:54,575 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:54,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:54,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1882471934, now seen corresponding path program 1 times [2020-09-25 05:39:54,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:54,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128645078] [2020-09-25 05:39:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:54,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:59,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:59,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 05:39:59,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:59,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 05:39:59,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:59,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:59,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:59,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-25 05:39:59,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 05:39:59,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:59,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:59,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:59,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:59,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:59,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:39:59,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:59,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:59,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:59,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:59,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:59,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:59,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 05:39:59,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:59,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 05:39:59,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:59,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:59,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:59,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:59,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 05:39:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:40:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:00,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128645078] [2020-09-25 05:40:00,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:00,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:00,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932236940] [2020-09-25 05:40:00,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:00,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:00,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:00,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:00,145 INFO L87 Difference]: Start difference. First operand 1966 states and 2666 transitions. Second operand 5 states. [2020-09-25 05:40:02,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:02,158 INFO L93 Difference]: Finished difference Result 4556 states and 6340 transitions. [2020-09-25 05:40:02,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:02,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 05:40:02,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:02,174 INFO L225 Difference]: With dead ends: 4556 [2020-09-25 05:40:02,174 INFO L226 Difference]: Without dead ends: 2605 [2020-09-25 05:40:02,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2020-09-25 05:40:02,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2427. [2020-09-25 05:40:02,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2427 states. [2020-09-25 05:40:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3294 transitions. [2020-09-25 05:40:02,271 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3294 transitions. Word has length 179 [2020-09-25 05:40:02,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:02,272 INFO L479 AbstractCegarLoop]: Abstraction has 2427 states and 3294 transitions. [2020-09-25 05:40:02,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:02,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3294 transitions. [2020-09-25 05:40:02,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 05:40:02,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:02,283 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:02,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:02,283 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:02,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:02,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1550607630, now seen corresponding path program 1 times [2020-09-25 05:40:02,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:02,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355971835] [2020-09-25 05:40:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:02,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:04,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:07,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-25 05:40:07,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:40:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 05:40:07,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:07,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:07,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 05:40:07,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 05:40:07,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:07,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:07,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:07,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:07,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:07,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:40:07,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:07,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:07,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:07,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:07,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:07,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:07,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:07,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:07,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:40:07,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:07,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 05:40:07,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:07,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:40:07,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:07,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:40:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:07,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:07,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 05:40:07,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 05:40:07,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:07,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 05:40:07,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:08,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355971835] [2020-09-25 05:40:08,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:08,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:40:08,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167142189] [2020-09-25 05:40:08,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:40:08,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:08,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:40:08,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:40:08,440 INFO L87 Difference]: Start difference. First operand 2427 states and 3294 transitions. Second operand 8 states.