/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/Problem10_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:46:22,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:46:22,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:46:23,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:46:23,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:46:23,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:46:23,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:46:23,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:46:23,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:46:23,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:46:23,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:46:23,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:46:23,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:46:23,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:46:23,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:46:23,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:46:23,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:46:23,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:46:23,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:46:23,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:46:23,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:46:23,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:46:23,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:46:23,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:46:23,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:46:23,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:46:23,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:46:23,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:46:23,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:46:23,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:46:23,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:46:23,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:46:23,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:46:23,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:46:23,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:46:23,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:46:23,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:46:23,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:46:23,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:46:23,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:46:23,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:46:23,073 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 06:46:23,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:46:23,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:46:23,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:46:23,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:46:23,125 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:46:23,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:46:23,126 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:46:23,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:46:23,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:46:23,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:46:23,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:46:23,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:46:23,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:46:23,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:46:23,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:46:23,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:46:23,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:46:23,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:46:23,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:46:23,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:46:23,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:46:23,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:23,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:46:23,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:46:23,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:46:23,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:46:23,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:46:23,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:46:23,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:46:23,132 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 06:46:23,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:46:23,610 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:46:23,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:46:23,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:46:23,620 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:46:23,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 06:46:23,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/814421355/c33f08d73fdc4f3fb086df40e5a22af7/FLAGf7f179e24 [2020-09-25 06:46:24,361 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:46:24,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 06:46:24,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/814421355/c33f08d73fdc4f3fb086df40e5a22af7/FLAGf7f179e24 [2020-09-25 06:46:24,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/814421355/c33f08d73fdc4f3fb086df40e5a22af7 [2020-09-25 06:46:24,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:46:24,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:46:24,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:24,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:46:24,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:46:24,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:24" (1/1) ... [2020-09-25 06:46:24,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:24, skipping insertion in model container [2020-09-25 06:46:24,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:24" (1/1) ... [2020-09-25 06:46:24,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:46:24,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:46:25,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:25,144 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:46:25,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:25,477 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:46:25,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:25 WrapperNode [2020-09-25 06:46:25,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:25,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:46:25,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:46:25,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:46:25,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:25" (1/1) ... [2020-09-25 06:46:25,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:25" (1/1) ... [2020-09-25 06:46:25,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:25" (1/1) ... [2020-09-25 06:46:25,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:25" (1/1) ... [2020-09-25 06:46:25,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:25" (1/1) ... [2020-09-25 06:46:25,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:25" (1/1) ... [2020-09-25 06:46:25,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:25" (1/1) ... [2020-09-25 06:46:25,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:46:25,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:46:25,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:46:25,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:46:25,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:25" (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 06:46:25,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:46:25,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:46:25,694 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:46:25,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:46:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:46:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:46:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:46:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:46:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:46:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:46:25,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:46:27,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:46:27,202 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:46:27,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:27 BoogieIcfgContainer [2020-09-25 06:46:27,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:46:27,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:46:27,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:46:27,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:46:27,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:46:24" (1/3) ... [2020-09-25 06:46:27,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:27, skipping insertion in model container [2020-09-25 06:46:27,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:25" (2/3) ... [2020-09-25 06:46:27,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:27, skipping insertion in model container [2020-09-25 06:46:27,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:27" (3/3) ... [2020-09-25 06:46:27,221 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label02.c [2020-09-25 06:46:27,232 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:46:27,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:46:27,263 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:46:27,294 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:46:27,295 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:46:27,295 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:46:27,295 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:46:27,295 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:46:27,295 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:46:27,295 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:46:27,295 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:46:27,324 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:46:27,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 06:46:27,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:27,338 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] [2020-09-25 06:46:27,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:27,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:27,346 INFO L82 PathProgramCache]: Analyzing trace with hash 613515831, now seen corresponding path program 1 times [2020-09-25 06:46:27,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:27,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 06:46:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:27,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:28,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:28,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:46:28,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:46:28,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1109 [2020-09-25 06:46:28,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:28,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:28,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:28,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:46:28,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:46:28,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:46:28,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:28,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:28,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:28,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:28,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:46:28,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:28,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:46:28,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:28,955 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 06:46:28,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 06:46:28,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:28,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:46:28,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603439560] [2020-09-25 06:46:28,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:46:28,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:28,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:46:28,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:46:28,995 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:46:30,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:30,998 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 06:46:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:46:31,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-09-25 06:46:31,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:31,048 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 06:46:31,048 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 06:46:31,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 06:46:31,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 06:46:31,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 06:46:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 06:46:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 06:46:31,204 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 78 [2020-09-25 06:46:31,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:31,205 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 06:46:31,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:46:31,205 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 06:46:31,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 06:46:31,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:31,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:31,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:46:31,216 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:31,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:31,216 INFO L82 PathProgramCache]: Analyzing trace with hash 970656551, now seen corresponding path program 1 times [2020-09-25 06:46:31,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:31,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929347013] [2020-09-25 06:46:31,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:31,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:31,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:31,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:32,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:32,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:36,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:36,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 06:46:36,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 06:46:36,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:36,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:46:36,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 06:46:36,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:36,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:36,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:36,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:36,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:36,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:36,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:46:36,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:36,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:36,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:36,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:36,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:36,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:36,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:36,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:36,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:46:36,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:36,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 06:46:36,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:36,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:36,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:36,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:46:36,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:36,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929347013] [2020-09-25 06:46:36,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:36,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:46:36,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158164498] [2020-09-25 06:46:36,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:46:36,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:36,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:46:36,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:36,589 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 06:46:39,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:39,021 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2020-09-25 06:46:39,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:46:39,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 06:46:39,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:39,033 INFO L225 Difference]: With dead ends: 850 [2020-09-25 06:46:39,034 INFO L226 Difference]: Without dead ends: 848 [2020-09-25 06:46:39,035 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 06:46:39,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-09-25 06:46:39,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2020-09-25 06:46:39,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-09-25 06:46:39,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1119 transitions. [2020-09-25 06:46:39,082 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1119 transitions. Word has length 157 [2020-09-25 06:46:39,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:39,111 INFO L479 AbstractCegarLoop]: Abstraction has 848 states and 1119 transitions. [2020-09-25 06:46:39,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:46:39,111 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1119 transitions. [2020-09-25 06:46:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 06:46:39,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:39,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:39,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:46:39,128 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:39,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:39,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1579224162, now seen corresponding path program 1 times [2020-09-25 06:46:39,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:39,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31482800] [2020-09-25 06:46:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:39,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:44,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:44,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 06:46:44,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:46:44,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 06:46:44,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:44,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:46:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 06:46:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:44,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:44,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:44,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:44,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:44,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:44,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:46:44,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:44,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:44,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:46:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:44,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:44,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:44,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:44,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 06:46:44,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-25 06:46:44,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:44,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 06:46:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:44,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31482800] [2020-09-25 06:46:44,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:44,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:46:44,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528182419] [2020-09-25 06:46:44,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:44,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:44,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:44,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:44,804 INFO L87 Difference]: Start difference. First operand 848 states and 1119 transitions. Second operand 7 states. [2020-09-25 06:46:47,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:47,255 INFO L93 Difference]: Finished difference Result 1942 states and 2690 transitions. [2020-09-25 06:46:47,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:46:47,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-09-25 06:46:47,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:47,272 INFO L225 Difference]: With dead ends: 1942 [2020-09-25 06:46:47,273 INFO L226 Difference]: Without dead ends: 1109 [2020-09-25 06:46:47,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:46:47,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-09-25 06:46:47,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 853. [2020-09-25 06:46:47,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-09-25 06:46:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1091 transitions. [2020-09-25 06:46:47,351 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1091 transitions. Word has length 214 [2020-09-25 06:46:47,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:47,358 INFO L479 AbstractCegarLoop]: Abstraction has 853 states and 1091 transitions. [2020-09-25 06:46:47,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1091 transitions. [2020-09-25 06:46:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-09-25 06:46:47,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:47,365 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:47,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:46:47,366 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:47,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:47,366 INFO L82 PathProgramCache]: Analyzing trace with hash 63532064, now seen corresponding path program 1 times [2020-09-25 06:46:47,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:47,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367284272] [2020-09-25 06:46:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:52,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-09-25 06:46:52,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:46:52,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:46:52,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:52,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:52,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:52,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 06:46:52,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 06:46:52,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:52,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:52,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:52,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:52,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:52,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:46:52,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:52,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:52,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:52,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:52,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:52,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:46:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:52,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:46:52,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:52,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 06:46:52,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:52,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 06:46:52,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:46:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:46:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:52,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:53,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:53,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 06:46:53,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:53,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-25 06:46:53,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:53,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 06:46:53,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:46:53,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367284272] [2020-09-25 06:46:53,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:53,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:46:53,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600406472] [2020-09-25 06:46:53,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:53,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:53,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:53,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:53,337 INFO L87 Difference]: Start difference. First operand 853 states and 1091 transitions. Second operand 7 states. [2020-09-25 06:46:55,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:55,557 INFO L93 Difference]: Finished difference Result 2053 states and 2817 transitions. [2020-09-25 06:46:55,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:46:55,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-09-25 06:46:55,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:55,575 INFO L225 Difference]: With dead ends: 2053 [2020-09-25 06:46:55,576 INFO L226 Difference]: Without dead ends: 1365 [2020-09-25 06:46:55,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:46:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-09-25 06:46:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1321. [2020-09-25 06:46:55,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2020-09-25 06:46:55,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1733 transitions. [2020-09-25 06:46:55,675 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1733 transitions. Word has length 286 [2020-09-25 06:46:55,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:55,676 INFO L479 AbstractCegarLoop]: Abstraction has 1321 states and 1733 transitions. [2020-09-25 06:46:55,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:55,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1733 transitions. [2020-09-25 06:46:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-25 06:46:55,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:55,690 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:46:55,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:46:55,691 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:55,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:55,691 INFO L82 PathProgramCache]: Analyzing trace with hash -2136866632, now seen corresponding path program 1 times [2020-09-25 06:46:55,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:55,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357990074] [2020-09-25 06:46:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:55,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:55,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:58,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:58,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:58,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:00,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:00,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-09-25 06:47:00,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:47:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 06:47:00,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:00,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:00,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:00,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:47:00,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 06:47:00,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:00,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:00,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:00,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:00,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:00,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:00,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:00,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:01,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:01,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:01,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:01,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 06:47:01,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:01,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:47:01,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:01,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:01,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:01,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:01,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 06:47:01,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:01,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-09-25 06:47:01,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:01,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:01,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 06:47:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:01,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357990074] [2020-09-25 06:47:01,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:01,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:47:01,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800809984] [2020-09-25 06:47:01,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:01,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:01,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:01,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:01,826 INFO L87 Difference]: Start difference. First operand 1321 states and 1733 transitions. Second operand 8 states. [2020-09-25 06:47:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:04,996 INFO L93 Difference]: Finished difference Result 4017 states and 5828 transitions. [2020-09-25 06:47:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 06:47:04,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 302 [2020-09-25 06:47:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:05,015 INFO L225 Difference]: With dead ends: 4017 [2020-09-25 06:47:05,015 INFO L226 Difference]: Without dead ends: 2861 [2020-09-25 06:47:05,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:47:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2020-09-25 06:47:05,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2753. [2020-09-25 06:47:05,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2753 states. [2020-09-25 06:47:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 3860 transitions. [2020-09-25 06:47:05,129 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 3860 transitions. Word has length 302 [2020-09-25 06:47:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:05,130 INFO L479 AbstractCegarLoop]: Abstraction has 2753 states and 3860 transitions. [2020-09-25 06:47:05,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 3860 transitions. [2020-09-25 06:47:05,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-25 06:47:05,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:05,141 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-09-25 06:47:05,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:05,141 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:05,142 INFO L82 PathProgramCache]: Analyzing trace with hash -669780688, now seen corresponding path program 1 times [2020-09-25 06:47:05,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:05,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123101942] [2020-09-25 06:47:05,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:05,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:06,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:10,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-09-25 06:47:10,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:47:10,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:47:10,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:10,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:10,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 06:47:10,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 06:47:10,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:10,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:10,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:10,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:10,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:10,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:47:10,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:10,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:10,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:10,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:10,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:47:10,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 06:47:10,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:10,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:10,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:47:10,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:10,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 06:47:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:10,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:10,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:10,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 06:47:10,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:10,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 06:47:10,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:10,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:10,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 06:47:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:47:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:10,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123101942] [2020-09-25 06:47:10,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:10,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:47:10,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989130319] [2020-09-25 06:47:10,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:10,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:10,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:10,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:10,993 INFO L87 Difference]: Start difference. First operand 2753 states and 3860 transitions. Second operand 8 states.