/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:26:03,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:26:03,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:26:03,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:26:03,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:26:03,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:26:03,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:26:03,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:26:03,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:26:03,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:26:03,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:26:03,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:26:03,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:26:03,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:26:03,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:26:03,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:26:03,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:26:03,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:26:03,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:26:03,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:26:03,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:26:03,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:26:03,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:26:03,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:26:03,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:26:03,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:26:03,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:26:03,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:26:03,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:26:03,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:26:03,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:26:03,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:26:03,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:26:03,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:26:03,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:26:03,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:26:03,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:26:03,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:26:03,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:26:03,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:26:03,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:26:03,983 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 04:26:04,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:26:04,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:26:04,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:26:04,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:26:04,032 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:26:04,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:26:04,033 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:26:04,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:26:04,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:26:04,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:26:04,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:26:04,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:26:04,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:26:04,034 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:26:04,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:26:04,035 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:26:04,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:26:04,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:26:04,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:26:04,036 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:26:04,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:26:04,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:26:04,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:26:04,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:26:04,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:26:04,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:26:04,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:26:04,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:26:04,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:26:04,038 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:26:04,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:26:04,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:26:04,509 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:26:04,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:26:04,511 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:26:04,512 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 04:26:04,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/385eedf28/bff1f5e3abfd4671be8fc1bc46390687/FLAGf3663f99e [2020-09-25 04:26:05,332 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:26:05,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 04:26:05,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/385eedf28/bff1f5e3abfd4671be8fc1bc46390687/FLAGf3663f99e [2020-09-25 04:26:05,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/385eedf28/bff1f5e3abfd4671be8fc1bc46390687 [2020-09-25 04:26:05,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:26:05,540 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:26:05,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:05,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:26:05,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:26:05,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:05" (1/1) ... [2020-09-25 04:26:05,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:05, skipping insertion in model container [2020-09-25 04:26:05,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:05" (1/1) ... [2020-09-25 04:26:05,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:26:05,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:26:06,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:06,161 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:26:06,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:06,454 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:26:06,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:06 WrapperNode [2020-09-25 04:26:06,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:06,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:26:06,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:26:06,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:26:06,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:06" (1/1) ... [2020-09-25 04:26:06,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:06" (1/1) ... [2020-09-25 04:26:06,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:06" (1/1) ... [2020-09-25 04:26:06,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:06" (1/1) ... [2020-09-25 04:26:06,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:06" (1/1) ... [2020-09-25 04:26:06,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:06" (1/1) ... [2020-09-25 04:26:06,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:06" (1/1) ... [2020-09-25 04:26:06,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:26:06,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:26:06,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:26:06,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:26:06,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:06" (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 04:26:06,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:26:06,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:26:06,720 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:26:06,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:26:06,720 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:26:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:26:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:26:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:26:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:26:06,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:26:06,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:26:08,080 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:26:08,080 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:26:08,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:08 BoogieIcfgContainer [2020-09-25 04:26:08,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:26:08,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:26:08,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:26:08,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:26:08,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:26:05" (1/3) ... [2020-09-25 04:26:08,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:08, skipping insertion in model container [2020-09-25 04:26:08,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:06" (2/3) ... [2020-09-25 04:26:08,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:08, skipping insertion in model container [2020-09-25 04:26:08,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:08" (3/3) ... [2020-09-25 04:26:08,100 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label56.c [2020-09-25 04:26:08,112 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:26:08,123 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:26:08,147 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:26:08,185 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:26:08,185 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:26:08,185 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:26:08,186 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:26:08,186 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:26:08,186 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:26:08,186 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:26:08,186 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:26:08,221 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:26:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 04:26:08,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:08,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:08,242 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:08,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:08,251 INFO L82 PathProgramCache]: Analyzing trace with hash 602782831, now seen corresponding path program 1 times [2020-09-25 04:26:08,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:08,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075] [2020-09-25 04:26:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:08,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:08,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:09,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:13,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:13,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:13,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-25 04:26:13,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:13,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:26:13,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:13,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:13,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:26:13,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 04:26:13,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 04:26:13,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:13,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:13,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:13,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:13,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:13,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 04:26:13,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:13,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:13,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:13,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:13,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:26:13,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:13,853 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 04:26:13,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075] [2020-09-25 04:26:13,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:13,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:26:13,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385905531] [2020-09-25 04:26:13,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:26:13,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:13,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:26:13,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:26:13,887 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:26:16,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:16,011 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 04:26:16,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:26:16,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-25 04:26:16,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:16,056 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 04:26:16,056 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 04:26:16,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:16,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 04:26:16,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 04:26:16,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:26:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 04:26:16,181 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 104 [2020-09-25 04:26:16,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:16,182 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 04:26:16,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:26:16,183 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 04:26:16,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 04:26:16,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:16,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:16,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:26:16,195 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:16,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:16,195 INFO L82 PathProgramCache]: Analyzing trace with hash -435684201, now seen corresponding path program 1 times [2020-09-25 04:26:16,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:16,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813512684] [2020-09-25 04:26:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:20,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:20,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:21,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 04:26:21,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 04:26:21,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:21,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:21,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:26:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:26:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:21,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:21,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:21,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:21,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:26:21,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:21,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:21,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:21,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:21,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:21,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:21,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:21,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:21,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:26:21,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:21,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:21,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:26:21,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:21,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813512684] [2020-09-25 04:26:21,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:21,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:21,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401182079] [2020-09-25 04:26:21,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:21,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:21,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:21,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:21,476 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 04:26:23,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:23,713 INFO L93 Difference]: Finished difference Result 1561 states and 1929 transitions. [2020-09-25 04:26:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:23,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-09-25 04:26:23,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:23,722 INFO L225 Difference]: With dead ends: 1561 [2020-09-25 04:26:23,722 INFO L226 Difference]: Without dead ends: 982 [2020-09-25 04:26:23,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:23,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-09-25 04:26:23,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 748. [2020-09-25 04:26:23,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 04:26:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 905 transitions. [2020-09-25 04:26:23,763 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 905 transitions. Word has length 125 [2020-09-25 04:26:23,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:23,764 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 905 transitions. [2020-09-25 04:26:23,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 905 transitions. [2020-09-25 04:26:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 04:26:23,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:23,772 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:26:23,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:26:23,772 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:23,773 INFO L82 PathProgramCache]: Analyzing trace with hash 305762680, now seen corresponding path program 1 times [2020-09-25 04:26:23,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:23,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634693584] [2020-09-25 04:26:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:23,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:28,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 04:26:28,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:26:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:26:28,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:28,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:28,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:26:28,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 04:26:28,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:28,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:28,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:28,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:28,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:26:28,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:28,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:28,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:28,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:29,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:26:29,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:29,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:26:29,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:29,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:29,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:26:29,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:29,056 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:29,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634693584] [2020-09-25 04:26:29,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:29,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:29,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63423609] [2020-09-25 04:26:29,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:29,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:29,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:29,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:29,061 INFO L87 Difference]: Start difference. First operand 748 states and 905 transitions. Second operand 5 states. [2020-09-25 04:26:31,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:31,001 INFO L93 Difference]: Finished difference Result 1957 states and 2468 transitions. [2020-09-25 04:26:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:31,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 04:26:31,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:31,016 INFO L225 Difference]: With dead ends: 1957 [2020-09-25 04:26:31,020 INFO L226 Difference]: Without dead ends: 1233 [2020-09-25 04:26:31,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:31,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-09-25 04:26:31,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1177. [2020-09-25 04:26:31,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-25 04:26:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1466 transitions. [2020-09-25 04:26:31,083 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1466 transitions. Word has length 134 [2020-09-25 04:26:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:31,085 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1466 transitions. [2020-09-25 04:26:31,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1466 transitions. [2020-09-25 04:26:31,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 04:26:31,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:31,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:31,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:26:31,093 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:31,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:31,101 INFO L82 PathProgramCache]: Analyzing trace with hash 752263732, now seen corresponding path program 1 times [2020-09-25 04:26:31,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:31,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139901299] [2020-09-25 04:26:31,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:31,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:34,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:34,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:36,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 04:26:36,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:26:36,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-09-25 04:26:36,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:36,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 04:26:36,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 04:26:36,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:36,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:36,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:36,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:26:36,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:36,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:36,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:36,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:36,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:36,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:36,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:36,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:36,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 04:26:36,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:36,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:26:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:36,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139901299] [2020-09-25 04:26:36,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:36,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:36,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336475391] [2020-09-25 04:26:36,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:36,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:36,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:36,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:36,462 INFO L87 Difference]: Start difference. First operand 1177 states and 1466 transitions. Second operand 5 states. [2020-09-25 04:26:38,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:38,547 INFO L93 Difference]: Finished difference Result 2982 states and 3833 transitions. [2020-09-25 04:26:38,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:38,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 04:26:38,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:38,559 INFO L225 Difference]: With dead ends: 2982 [2020-09-25 04:26:38,559 INFO L226 Difference]: Without dead ends: 1829 [2020-09-25 04:26:38,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:38,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2020-09-25 04:26:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1463. [2020-09-25 04:26:38,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-09-25 04:26:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 1883 transitions. [2020-09-25 04:26:38,638 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 1883 transitions. Word has length 135 [2020-09-25 04:26:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:38,638 INFO L479 AbstractCegarLoop]: Abstraction has 1463 states and 1883 transitions. [2020-09-25 04:26:38,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 1883 transitions. [2020-09-25 04:26:38,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 04:26:38,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:38,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:38,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:26:38,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:38,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:38,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1060590272, now seen corresponding path program 1 times [2020-09-25 04:26:38,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:38,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522559229] [2020-09-25 04:26:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:38,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:38,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:43,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 04:26:43,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:26:43,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-09-25 04:26:43,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:43,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 04:26:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 04:26:43,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:43,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:43,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:43,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:43,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:43,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:26:43,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:43,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:43,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:43,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:43,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:26:43,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 04:26:43,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:43,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:43,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:26:43,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:43,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522559229] [2020-09-25 04:26:43,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:43,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:43,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825721052] [2020-09-25 04:26:43,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:43,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:43,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:43,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:43,998 INFO L87 Difference]: Start difference. First operand 1463 states and 1883 transitions. Second operand 5 states. [2020-09-25 04:26:45,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:45,714 INFO L93 Difference]: Finished difference Result 3789 states and 5075 transitions. [2020-09-25 04:26:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:45,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 04:26:45,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:45,732 INFO L225 Difference]: With dead ends: 3789 [2020-09-25 04:26:45,732 INFO L226 Difference]: Without dead ends: 2350 [2020-09-25 04:26:45,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:45,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2020-09-25 04:26:45,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 1751. [2020-09-25 04:26:45,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2020-09-25 04:26:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2244 transitions. [2020-09-25 04:26:45,822 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2244 transitions. Word has length 141 [2020-09-25 04:26:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:45,822 INFO L479 AbstractCegarLoop]: Abstraction has 1751 states and 2244 transitions. [2020-09-25 04:26:45,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2244 transitions. [2020-09-25 04:26:45,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 04:26:45,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:45,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:45,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:26:45,831 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:45,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:45,831 INFO L82 PathProgramCache]: Analyzing trace with hash -620063423, now seen corresponding path program 1 times [2020-09-25 04:26:45,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:45,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757554985] [2020-09-25 04:26:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:45,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:45,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:46,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:47,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:50,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:50,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:50,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 04:26:50,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:26:50,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:26:50,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:50,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:50,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:50,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 04:26:50,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 04:26:50,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:50,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:50,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:50,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:50,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:50,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:26:50,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:50,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:50,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:50,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:50,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:51,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:51,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:51,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:26:51,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:51,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 04:26:51,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:51,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:51,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 04:26:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:51,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757554985] [2020-09-25 04:26:51,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:51,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:51,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888215533] [2020-09-25 04:26:51,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:51,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:51,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:51,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:51,108 INFO L87 Difference]: Start difference. First operand 1751 states and 2244 transitions. Second operand 5 states. [2020-09-25 04:26:53,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:53,058 INFO L93 Difference]: Finished difference Result 4369 states and 5771 transitions. [2020-09-25 04:26:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:53,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 04:26:53,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:53,075 INFO L225 Difference]: With dead ends: 4369 [2020-09-25 04:26:53,076 INFO L226 Difference]: Without dead ends: 2642 [2020-09-25 04:26:53,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:26:53,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2020-09-25 04:26:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2466. [2020-09-25 04:26:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2466 states. [2020-09-25 04:26:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3104 transitions. [2020-09-25 04:26:53,162 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3104 transitions. Word has length 147 [2020-09-25 04:26:53,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:53,162 INFO L479 AbstractCegarLoop]: Abstraction has 2466 states and 3104 transitions. [2020-09-25 04:26:53,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:53,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3104 transitions. [2020-09-25 04:26:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 04:26:53,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:53,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:26:53,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:26:53,174 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:53,175 INFO L82 PathProgramCache]: Analyzing trace with hash -588171755, now seen corresponding path program 1 times [2020-09-25 04:26:53,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:53,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137707404] [2020-09-25 04:26:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:53,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking...