/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=1.0 --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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:04:45,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:04:45,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:04:46,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:04:46,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:04:46,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:04:46,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:04:46,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:04:46,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:04:46,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:04:46,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:04:46,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:04:46,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:04:46,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:04:46,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:04:46,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:04:46,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:04:46,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:04:46,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:04:46,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:04:46,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:04:46,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:04:46,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:04:46,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:04:46,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:04:46,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:04:46,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:04:46,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:04:46,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:04:46,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:04:46,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:04:46,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:04:46,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:04:46,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:04:46,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:04:46,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:04:46,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:04:46,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:04:46,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:04:46,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:04:46,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:04:46,088 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 09:04:46,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:04:46,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:04:46,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:04:46,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:04:46,139 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:04:46,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:04:46,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:04:46,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:04:46,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:04:46,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:04:46,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:04:46,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:04:46,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:04:46,142 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:04:46,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:04:46,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:04:46,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:04:46,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:04:46,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:04:46,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:04:46,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:04:46,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:46,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:04:46,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:04:46,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:04:46,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:04:46,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:04:46,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:04:46,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:04:46,146 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:04:46,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:04:46,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:04:46,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:04:46,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:04:46,633 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:04:46,635 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 09:04:46,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/028308b12/8a1c33e729fa4613a77601a022e9beed/FLAG6f9372aa4 [2020-09-25 09:04:47,308 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:04:47,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label08.c [2020-09-25 09:04:47,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/028308b12/8a1c33e729fa4613a77601a022e9beed/FLAG6f9372aa4 [2020-09-25 09:04:47,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/028308b12/8a1c33e729fa4613a77601a022e9beed [2020-09-25 09:04:47,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:04:47,560 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:04:47,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:47,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:04:47,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:04:47,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:47" (1/1) ... [2020-09-25 09:04:47,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:47, skipping insertion in model container [2020-09-25 09:04:47,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:47" (1/1) ... [2020-09-25 09:04:47,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:04:47,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:04:48,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:48,089 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:04:48,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:48,338 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:04:48,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:48 WrapperNode [2020-09-25 09:04:48,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:48,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:04:48,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:04:48,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:04:48,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:48" (1/1) ... [2020-09-25 09:04:48,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:48" (1/1) ... [2020-09-25 09:04:48,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:48" (1/1) ... [2020-09-25 09:04:48,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:48" (1/1) ... [2020-09-25 09:04:48,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:48" (1/1) ... [2020-09-25 09:04:48,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:48" (1/1) ... [2020-09-25 09:04:48,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:48" (1/1) ... [2020-09-25 09:04:48,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:04:48,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:04:48,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:04:48,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:04:48,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:48" (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 09:04:48,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:04:48,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:04:48,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:04:48,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:04:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:04:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:04:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:04:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:04:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:04:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:04:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:04:50,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:04:50,074 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:04:50,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:50 BoogieIcfgContainer [2020-09-25 09:04:50,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:04:50,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:04:50,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:04:50,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:04:50,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:04:47" (1/3) ... [2020-09-25 09:04:50,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:50, skipping insertion in model container [2020-09-25 09:04:50,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:48" (2/3) ... [2020-09-25 09:04:50,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:50, skipping insertion in model container [2020-09-25 09:04:50,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:50" (3/3) ... [2020-09-25 09:04:50,094 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label08.c [2020-09-25 09:04:50,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:04:50,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:04:50,144 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:04:50,179 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:04:50,180 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:04:50,180 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:04:50,180 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:04:50,180 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:04:50,180 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:04:50,180 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:04:50,181 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:04:50,215 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:04:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 09:04:50,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:50,227 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] [2020-09-25 09:04:50,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:50,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:50,236 INFO L82 PathProgramCache]: Analyzing trace with hash -938747945, now seen corresponding path program 1 times [2020-09-25 09:04:50,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:50,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159932049] [2020-09-25 09:04:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:50,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:50,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:51,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:51,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 09:04:51,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-09-25 09:04:51,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:51,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:51,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:51,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:04:51,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 09:04:51,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:04:51,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:51,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:51,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:51,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:51,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:51,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:04:51,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:51,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:51,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:04:51,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:51,647 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 09:04:51,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159932049] [2020-09-25 09:04:51,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:51,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:04:51,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682422980] [2020-09-25 09:04:51,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:51,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:51,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:51,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:51,694 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 09:04:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:54,723 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 09:04:54,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:04:54,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-09-25 09:04:54,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:54,772 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 09:04:54,772 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 09:04:54,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:54,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 09:04:54,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 09:04:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 09:04:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 09:04:54,970 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 59 [2020-09-25 09:04:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:54,971 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 09:04:54,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:54,971 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 09:04:54,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 09:04:54,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:54,987 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:54,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:54,987 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:54,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:54,988 INFO L82 PathProgramCache]: Analyzing trace with hash -899949441, now seen corresponding path program 1 times [2020-09-25 09:04:54,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:54,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888497867] [2020-09-25 09:04:54,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:55,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:55,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:00,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 09:05:00,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 09:05:00,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:00,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:00,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 09:05:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:00,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:00,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:00,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:00,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:05:00,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:00,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:00,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:00,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:00,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:00,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:00,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:00,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:00,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:00,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 09:05:00,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:00,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-09-25 09:05:00,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:00,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:00,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:00,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:00,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 09:05:00,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:01,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888497867] [2020-09-25 09:05:01,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:01,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:01,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893867551] [2020-09-25 09:05:01,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:01,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:01,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:01,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:01,157 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 10 states. [2020-09-25 09:05:04,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:04,641 INFO L93 Difference]: Finished difference Result 1898 states and 2627 transitions. [2020-09-25 09:05:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:05:04,643 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 188 [2020-09-25 09:05:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:04,652 INFO L225 Difference]: With dead ends: 1898 [2020-09-25 09:05:04,652 INFO L226 Difference]: Without dead ends: 1194 [2020-09-25 09:05:04,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:05:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-09-25 09:05:04,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1000. [2020-09-25 09:05:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-09-25 09:05:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1282 transitions. [2020-09-25 09:05:04,717 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1282 transitions. Word has length 188 [2020-09-25 09:05:04,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:04,723 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1282 transitions. [2020-09-25 09:05:04,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:04,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1282 transitions. [2020-09-25 09:05:04,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 09:05:04,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:04,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:04,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:05:04,737 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:04,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1891490353, now seen corresponding path program 1 times [2020-09-25 09:05:04,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:04,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849183329] [2020-09-25 09:05:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:04,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:05,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:07,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:09,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 09:05:09,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:05:09,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:09,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:09,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 09:05:09,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:09,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:09,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:09,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:09,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:09,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:05:09,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:09,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:09,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:09,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:10,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 09:05:10,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 09:05:10,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:10,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 09:05:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:10,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849183329] [2020-09-25 09:05:10,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:10,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:05:10,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241698963] [2020-09-25 09:05:10,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:10,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:10,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:10,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:10,388 INFO L87 Difference]: Start difference. First operand 1000 states and 1282 transitions. Second operand 7 states. [2020-09-25 09:05:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:12,397 INFO L93 Difference]: Finished difference Result 2315 states and 3047 transitions. [2020-09-25 09:05:12,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:05:12,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 09:05:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:12,408 INFO L225 Difference]: With dead ends: 2315 [2020-09-25 09:05:12,408 INFO L226 Difference]: Without dead ends: 1330 [2020-09-25 09:05:12,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:05:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2020-09-25 09:05:12,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1166. [2020-09-25 09:05:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2020-09-25 09:05:12,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1467 transitions. [2020-09-25 09:05:12,459 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1467 transitions. Word has length 195 [2020-09-25 09:05:12,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:12,459 INFO L479 AbstractCegarLoop]: Abstraction has 1166 states and 1467 transitions. [2020-09-25 09:05:12,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:12,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1467 transitions. [2020-09-25 09:05:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-09-25 09:05:12,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:12,467 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:12,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:12,468 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:12,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:12,468 INFO L82 PathProgramCache]: Analyzing trace with hash 463482390, now seen corresponding path program 1 times [2020-09-25 09:05:12,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:12,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356663473] [2020-09-25 09:05:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:12,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:12,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:13,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:17,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-09-25 09:05:17,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:17,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 09:05:17,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:17,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 09:05:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 09:05:17,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:17,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:17,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:17,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:17,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:17,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:05:17,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:17,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:17,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:17,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:17,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:17,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:17,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:17,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:17,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 09:05:17,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:17,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:05:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:17,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:05:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:17,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:18,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:18,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 09:05:18,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:18,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 09:05:18,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:18,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:18,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:18,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:18,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 09:05:18,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:05:18,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356663473] [2020-09-25 09:05:18,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:18,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:05:18,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365280866] [2020-09-25 09:05:18,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:18,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:18,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:18,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:18,373 INFO L87 Difference]: Start difference. First operand 1166 states and 1467 transitions. Second operand 7 states. [2020-09-25 09:05:20,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:20,678 INFO L93 Difference]: Finished difference Result 2517 states and 3242 transitions. [2020-09-25 09:05:20,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:05:20,678 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-09-25 09:05:20,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:20,686 INFO L225 Difference]: With dead ends: 2517 [2020-09-25 09:05:20,686 INFO L226 Difference]: Without dead ends: 1178 [2020-09-25 09:05:20,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:05:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2020-09-25 09:05:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1134. [2020-09-25 09:05:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1134 states. [2020-09-25 09:05:20,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1402 transitions. [2020-09-25 09:05:20,730 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1402 transitions. Word has length 283 [2020-09-25 09:05:20,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:20,731 INFO L479 AbstractCegarLoop]: Abstraction has 1134 states and 1402 transitions. [2020-09-25 09:05:20,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:20,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1402 transitions. [2020-09-25 09:05:20,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-09-25 09:05:20,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:20,737 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:05:20,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:20,738 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:20,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:20,738 INFO L82 PathProgramCache]: Analyzing trace with hash -429680418, now seen corresponding path program 1 times [2020-09-25 09:05:20,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:20,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720340800] [2020-09-25 09:05:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:20,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:25,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-09-25 09:05:25,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-09-25 09:05:25,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:25,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 09:05:25,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 09:05:25,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:26,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:26,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:26,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:26,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:26,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:05:26,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:26,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:26,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:26,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:26,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 09:05:26,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 09:05:26,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:26,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:05:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 09:05:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 09:05:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:26,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 09:05:26,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:26,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-25 09:05:26,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:26,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:26,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:26,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 09:05:26,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:05:26,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720340800] [2020-09-25 09:05:26,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:26,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:05:26,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186786214] [2020-09-25 09:05:26,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:05:26,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:26,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:05:26,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:26,740 INFO L87 Difference]: Start difference. First operand 1134 states and 1402 transitions. Second operand 8 states. [2020-09-25 09:05:29,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:29,492 INFO L93 Difference]: Finished difference Result 3084 states and 4024 transitions. [2020-09-25 09:05:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:05:29,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 285 [2020-09-25 09:05:29,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:29,509 INFO L225 Difference]: With dead ends: 3084 [2020-09-25 09:05:29,510 INFO L226 Difference]: Without dead ends: 1965 [2020-09-25 09:05:29,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:05:29,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-09-25 09:05:29,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1759. [2020-09-25 09:05:29,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1759 states. [2020-09-25 09:05:29,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2202 transitions. [2020-09-25 09:05:29,613 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2202 transitions. Word has length 285 [2020-09-25 09:05:29,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:29,614 INFO L479 AbstractCegarLoop]: Abstraction has 1759 states and 2202 transitions. [2020-09-25 09:05:29,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:05:29,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2202 transitions. [2020-09-25 09:05:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-25 09:05:29,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:29,631 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:05:29,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:29,631 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:29,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:29,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1104098550, now seen corresponding path program 1 times [2020-09-25 09:05:29,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:29,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457541739] [2020-09-25 09:05:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:29,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:29,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:30,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking...