/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=0.6 --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/Problem01_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:08,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:08,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:08,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:08,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:08,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:08,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:08,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:08,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:08,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:08,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:08,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:08,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:08,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:08,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:08,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:08,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:08,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:08,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:08,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:08,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:08,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:08,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:08,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:08,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:08,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:08,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:08,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:08,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:08,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:08,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:08,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:08,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:08,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:08,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:08,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:08,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:08,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:08,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:08,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:08,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:08,993 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 06:43:09,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:09,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:09,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:09,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:09,021 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:09,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:09,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:09,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:09,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:09,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:09,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:09,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:09,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:09,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:09,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:09,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:09,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:09,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:09,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:09,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:09,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:09,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:09,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:09,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:09,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:09,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:09,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:09,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:09,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:09,026 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:43:09,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:09,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:09,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:09,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:09,533 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:09,535 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 06:43:09,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3ca6da7f/85dca547dd954124979327db87294ae3/FLAG3c8be7d48 [2020-09-25 06:43:10,295 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:10,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 06:43:10,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3ca6da7f/85dca547dd954124979327db87294ae3/FLAG3c8be7d48 [2020-09-25 06:43:10,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d3ca6da7f/85dca547dd954124979327db87294ae3 [2020-09-25 06:43:10,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:10,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:10,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:10,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:10,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:10,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:10" (1/1) ... [2020-09-25 06:43:10,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:10, skipping insertion in model container [2020-09-25 06:43:10,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:10" (1/1) ... [2020-09-25 06:43:10,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:10,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:11,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:11,115 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:11,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:11,355 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:11,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:11 WrapperNode [2020-09-25 06:43:11,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:11,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:11,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:11,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:11,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:11" (1/1) ... [2020-09-25 06:43:11,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:11" (1/1) ... [2020-09-25 06:43:11,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:11" (1/1) ... [2020-09-25 06:43:11,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:11" (1/1) ... [2020-09-25 06:43:11,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:11" (1/1) ... [2020-09-25 06:43:11,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:11" (1/1) ... [2020-09-25 06:43:11,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:11" (1/1) ... [2020-09-25 06:43:11,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:43:11,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:43:11,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:43:11,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:43:11,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:11" (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 06:43:11,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:43:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:43:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:43:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:43:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:43:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:43:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:43:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:43:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:43:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:43:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:12,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:12,958 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:12,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:12 BoogieIcfgContainer [2020-09-25 06:43:12,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:12,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:12,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:12,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:12,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:10" (1/3) ... [2020-09-25 06:43:12,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:12, skipping insertion in model container [2020-09-25 06:43:12,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:11" (2/3) ... [2020-09-25 06:43:12,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:12, skipping insertion in model container [2020-09-25 06:43:12,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:12" (3/3) ... [2020-09-25 06:43:12,986 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-09-25 06:43:13,000 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:13,019 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:13,043 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:13,085 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:13,085 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:13,085 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:13,086 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:13,086 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:13,086 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:13,086 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:13,086 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:13,135 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:43:13,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 06:43:13,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:13,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:13,159 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:13,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:13,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1970187929, now seen corresponding path program 1 times [2020-09-25 06:43:13,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:13,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251981973] [2020-09-25 06:43:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:14,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:14,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:17,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:17,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:17,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:18,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 06:43:18,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:18,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-25 06:43:18,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:18,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:18,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:18,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:43:18,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 06:43:18,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:43:18,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:18,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:18,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:18,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:43:18,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:18,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:18,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:18,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:43:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:18,895 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 06:43:18,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251981973] [2020-09-25 06:43:18,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:18,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:43:18,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252490125] [2020-09-25 06:43:18,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:43:18,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:18,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:43:18,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:43:18,942 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:43:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:21,120 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 06:43:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:43:21,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 06:43:21,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:21,148 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 06:43:21,148 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 06:43:21,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:21,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 06:43:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 06:43:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 06:43:21,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 06:43:21,263 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 150 [2020-09-25 06:43:21,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:21,285 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 06:43:21,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:43:21,286 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 06:43:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 06:43:21,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:21,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:21,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:43:21,298 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:21,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:21,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1716709436, now seen corresponding path program 1 times [2020-09-25 06:43:21,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:21,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217362576] [2020-09-25 06:43:21,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:22,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:24,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:24,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:26,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 06:43:26,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:43:26,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:43:26,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:26,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:26,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:26,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 06:43:26,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 06:43:26,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:26,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:26,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:26,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:43:26,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:26,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:26,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:26,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:26,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:26,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:26,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:26,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:43:26,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:26,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:43:26,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:26,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:26,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:43:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:43:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:26,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217362576] [2020-09-25 06:43:26,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:26,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:26,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663955407] [2020-09-25 06:43:26,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:26,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:26,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:26,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:26,758 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 06:43:28,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:28,776 INFO L93 Difference]: Finished difference Result 1505 states and 1856 transitions. [2020-09-25 06:43:28,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:28,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 06:43:28,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:28,789 INFO L225 Difference]: With dead ends: 1505 [2020-09-25 06:43:28,790 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 06:43:28,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:28,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 06:43:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 891. [2020-09-25 06:43:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 06:43:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1084 transitions. [2020-09-25 06:43:28,843 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1084 transitions. Word has length 167 [2020-09-25 06:43:28,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:28,844 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1084 transitions. [2020-09-25 06:43:28,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:28,844 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1084 transitions. [2020-09-25 06:43:28,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 06:43:28,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:28,850 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:28,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:43:28,851 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:28,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:28,851 INFO L82 PathProgramCache]: Analyzing trace with hash 996248242, now seen corresponding path program 1 times [2020-09-25 06:43:28,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:28,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403470972] [2020-09-25 06:43:28,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:28,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:33,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 06:43:33,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:43:33,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:43:33,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:33,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:43:33,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 06:43:33,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:34,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:34,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:34,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:34,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:34,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:34,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:43:34,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:34,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:34,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:34,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:34,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:34,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:34,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:34,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:34,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:34,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:43:34,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:34,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:34,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:43:34,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:34,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:43:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:34,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:34,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:34,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 06:43:34,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:34,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 06:43:34,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:34,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:43:34,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:43:34,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403470972] [2020-09-25 06:43:34,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:34,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:43:34,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950797471] [2020-09-25 06:43:34,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:34,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:34,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:34,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:34,286 INFO L87 Difference]: Start difference. First operand 891 states and 1084 transitions. Second operand 7 states. [2020-09-25 06:43:36,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:36,310 INFO L93 Difference]: Finished difference Result 2144 states and 2702 transitions. [2020-09-25 06:43:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:43:36,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-09-25 06:43:36,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:36,322 INFO L225 Difference]: With dead ends: 2144 [2020-09-25 06:43:36,323 INFO L226 Difference]: Without dead ends: 1277 [2020-09-25 06:43:36,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:43:36,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-09-25 06:43:36,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1077. [2020-09-25 06:43:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-25 06:43:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1328 transitions. [2020-09-25 06:43:36,368 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1328 transitions. Word has length 212 [2020-09-25 06:43:36,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:36,368 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1328 transitions. [2020-09-25 06:43:36,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1328 transitions. [2020-09-25 06:43:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 06:43:36,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:36,375 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:36,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:43:36,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:36,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:36,376 INFO L82 PathProgramCache]: Analyzing trace with hash 19036305, now seen corresponding path program 1 times [2020-09-25 06:43:36,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:36,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772631317] [2020-09-25 06:43:36,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:36,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:39,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:41,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 06:43:41,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:43:41,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:43:41,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:41,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:41,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:43:41,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 06:43:41,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 06:43:41,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:41,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:41,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:41,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:41,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:41,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:43:41,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:41,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:41,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:41,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:41,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:41,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:43:41,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:41,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:43:41,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:41,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:43:41,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:41,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:41,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:43:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:41,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:41,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 06:43:41,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:41,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 06:43:41,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:41,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:43:41,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:43:42,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772631317] [2020-09-25 06:43:42,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:42,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:43:42,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933555270] [2020-09-25 06:43:42,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:43:42,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:42,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:43:42,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:43:42,113 INFO L87 Difference]: Start difference. First operand 1077 states and 1328 transitions. Second operand 8 states. [2020-09-25 06:43:45,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:45,486 INFO L93 Difference]: Finished difference Result 2861 states and 3598 transitions. [2020-09-25 06:43:45,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:43:45,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-09-25 06:43:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:45,501 INFO L225 Difference]: With dead ends: 2861 [2020-09-25 06:43:45,502 INFO L226 Difference]: Without dead ends: 1808 [2020-09-25 06:43:45,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:43:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2020-09-25 06:43:45,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1703. [2020-09-25 06:43:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1703 states. [2020-09-25 06:43:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2091 transitions. [2020-09-25 06:43:45,582 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2091 transitions. Word has length 219 [2020-09-25 06:43:45,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:45,583 INFO L479 AbstractCegarLoop]: Abstraction has 1703 states and 2091 transitions. [2020-09-25 06:43:45,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:43:45,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2091 transitions. [2020-09-25 06:43:45,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 06:43:45,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:45,595 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:45,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:43:45,596 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:45,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:45,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1783992526, now seen corresponding path program 1 times [2020-09-25 06:43:45,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:45,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631215820] [2020-09-25 06:43:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:45,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:45,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:46,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:49,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:49,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:49,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:50,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-25 06:43:50,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 06:43:50,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 06:43:50,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:50,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 06:43:50,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 06:43:50,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:50,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:50,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:50,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:50,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:50,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:43:50,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:50,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:50,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:50,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:50,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:50,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:50,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:50,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:43:50,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:50,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:43:50,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:50,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:50,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:50,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:50,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:50,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:43:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:50,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:50,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 06:43:50,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:50,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 06:43:50,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:50,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:50,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 06:43:50,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 06:43:51,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631215820] [2020-09-25 06:43:51,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:51,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:51,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049796734] [2020-09-25 06:43:51,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:51,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:51,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:51,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:51,021 INFO L87 Difference]: Start difference. First operand 1703 states and 2091 transitions. Second operand 5 states. [2020-09-25 06:43:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:53,235 INFO L93 Difference]: Finished difference Result 3482 states and 4273 transitions. [2020-09-25 06:43:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:53,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-09-25 06:43:53,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:53,244 INFO L225 Difference]: With dead ends: 3482 [2020-09-25 06:43:53,245 INFO L226 Difference]: Without dead ends: 1803 [2020-09-25 06:43:53,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2020-09-25 06:43:53,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1554. [2020-09-25 06:43:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-09-25 06:43:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1826 transitions. [2020-09-25 06:43:53,295 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1826 transitions. Word has length 234 [2020-09-25 06:43:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:53,296 INFO L479 AbstractCegarLoop]: Abstraction has 1554 states and 1826 transitions. [2020-09-25 06:43:53,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:53,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1826 transitions. [2020-09-25 06:43:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 06:43:53,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:53,304 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:53,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:43:53,305 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:53,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:53,305 INFO L82 PathProgramCache]: Analyzing trace with hash -2098605994, now seen corresponding path program 1 times [2020-09-25 06:43:53,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:53,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720738562] [2020-09-25 06:43:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:53,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:54,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:54,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:54,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:58,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 06:43:58,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:43:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 06:43:58,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:58,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 06:43:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-09-25 06:43:58,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:58,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:58,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:58,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:58,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:43:58,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:58,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:58,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:58,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:58,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:58,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:43:58,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:43:58,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:58,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:43:58,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:58,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:43:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:58,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:58,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:58,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:43:58,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:58,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 06:43:58,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:58,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 06:43:58,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0