/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=0.8 --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/Problem02_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:55:18,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:55:18,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:55:18,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:55:18,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:55:18,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:55:18,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:55:18,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:55:18,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:55:18,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:55:18,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:55:18,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:55:18,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:55:18,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:55:18,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:55:18,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:55:18,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:55:18,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:55:18,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:55:18,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:55:18,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:55:18,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:55:18,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:55:18,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:55:18,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:55:18,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:55:18,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:55:18,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:55:18,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:55:18,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:55:18,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:55:18,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:55:18,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:55:18,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:55:18,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:55:18,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:55:18,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:55:18,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:55:18,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:55:18,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:55:18,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:55:18,213 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 07:55:18,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:55:18,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:55:18,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:55:18,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:55:18,267 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:55:18,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:55:18,267 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:55:18,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:55:18,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:55:18,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:55:18,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:55:18,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:55:18,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:55:18,270 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:55:18,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:55:18,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:55:18,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:55:18,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:55:18,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:55:18,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:55:18,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:55:18,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:18,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:55:18,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:55:18,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:55:18,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:55:18,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:55:18,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:55:18,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:55:18,274 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:55:18,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:55:18,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:55:18,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:55:18,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:55:18,784 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:55:18,785 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 07:55:18,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57cabc571/ceaec03f1d5a4df1b4e69f42b78d9c74/FLAG8faac7e89 [2020-09-25 07:55:19,454 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:55:19,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label56.c [2020-09-25 07:55:19,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57cabc571/ceaec03f1d5a4df1b4e69f42b78d9c74/FLAG8faac7e89 [2020-09-25 07:55:19,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/57cabc571/ceaec03f1d5a4df1b4e69f42b78d9c74 [2020-09-25 07:55:19,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:55:19,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:55:19,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:19,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:55:19,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:55:19,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:19" (1/1) ... [2020-09-25 07:55:19,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:19, skipping insertion in model container [2020-09-25 07:55:19,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:19" (1/1) ... [2020-09-25 07:55:19,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:55:19,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:55:20,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:20,335 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:55:20,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:20,631 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:55:20,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:20 WrapperNode [2020-09-25 07:55:20,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:20,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:55:20,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:55:20,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:55:20,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:20" (1/1) ... [2020-09-25 07:55:20,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:20" (1/1) ... [2020-09-25 07:55:20,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:20" (1/1) ... [2020-09-25 07:55:20,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:20" (1/1) ... [2020-09-25 07:55:20,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:20" (1/1) ... [2020-09-25 07:55:20,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:20" (1/1) ... [2020-09-25 07:55:20,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:20" (1/1) ... [2020-09-25 07:55:20,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:55:20,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:55:20,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:55:20,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:55:20,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:20" (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 07:55:20,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:20,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:20,872 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:20,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:22,202 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:22,203 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:22,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:22 BoogieIcfgContainer [2020-09-25 07:55:22,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:22,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:22,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:22,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:22,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:55:19" (1/3) ... [2020-09-25 07:55:22,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:22, skipping insertion in model container [2020-09-25 07:55:22,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:20" (2/3) ... [2020-09-25 07:55:22,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a66a94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:22, skipping insertion in model container [2020-09-25 07:55:22,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:22" (3/3) ... [2020-09-25 07:55:22,222 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label56.c [2020-09-25 07:55:22,235 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:22,246 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:22,270 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:22,305 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:22,305 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:22,305 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:22,305 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:22,305 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:22,306 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:22,306 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:22,306 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:22,340 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:55:22,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 07:55:22,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:22,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:22,367 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:22,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:22,376 INFO L82 PathProgramCache]: Analyzing trace with hash -934155158, now seen corresponding path program 1 times [2020-09-25 07:55:22,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:22,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840094341] [2020-09-25 07:55:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:22,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:23,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:23,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:27,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:27,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:27,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 07:55:27,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:55:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:55:27,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:27,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 07:55:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 07:55:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:55:27,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:28,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:28,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:28,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:28,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:28,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 07:55:28,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:28,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:28,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:28,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:28,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:55:28,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:55:28,143 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 07:55:28,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840094341] [2020-09-25 07:55:28,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:28,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:55:28,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560970279] [2020-09-25 07:55:28,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:55:28,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:28,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:55:28,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:55:28,180 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:55:30,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:30,507 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-25 07:55:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:55:30,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-09-25 07:55:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:30,553 INFO L225 Difference]: With dead ends: 1247 [2020-09-25 07:55:30,553 INFO L226 Difference]: Without dead ends: 669 [2020-09-25 07:55:30,563 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 07:55:30,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-25 07:55:30,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-25 07:55:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 07:55:30,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 07:55:30,707 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 149 [2020-09-25 07:55:30,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:30,712 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 07:55:30,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:55:30,712 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 07:55:30,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 07:55:30,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:30,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:30,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:30,732 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:30,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:30,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1111409233, now seen corresponding path program 1 times [2020-09-25 07:55:30,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:30,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155082126] [2020-09-25 07:55:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:30,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:30,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:35,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:35,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:35,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:35,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 07:55:35,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:55:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:55:35,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:35,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:55:35,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 07:55:35,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:35,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:35,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:35,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:35,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:55:35,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:35,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:35,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:36,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:36,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:36,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:55:36,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:36,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:55:36,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:36,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:36,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:36,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:36,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:55:36,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:36,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155082126] [2020-09-25 07:55:36,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:36,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:36,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354636684] [2020-09-25 07:55:36,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:36,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:36,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:36,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:36,091 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 07:55:38,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:38,189 INFO L93 Difference]: Finished difference Result 1531 states and 1847 transitions. [2020-09-25 07:55:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:38,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 07:55:38,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:38,197 INFO L225 Difference]: With dead ends: 1531 [2020-09-25 07:55:38,197 INFO L226 Difference]: Without dead ends: 932 [2020-09-25 07:55:38,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 07:55:38,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-09-25 07:55:38,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2020-09-25 07:55:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-09-25 07:55:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1103 transitions. [2020-09-25 07:55:38,239 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1103 transitions. Word has length 166 [2020-09-25 07:55:38,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:38,240 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1103 transitions. [2020-09-25 07:55:38,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1103 transitions. [2020-09-25 07:55:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 07:55:38,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:38,246 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:38,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:55:38,246 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:38,247 INFO L82 PathProgramCache]: Analyzing trace with hash -375129923, now seen corresponding path program 1 times [2020-09-25 07:55:38,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:38,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013862639] [2020-09-25 07:55:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:38,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:39,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:42,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:42,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:42,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:43,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 07:55:43,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 07:55:43,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:55:43,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:43,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:43,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:55:43,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 07:55:43,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 07:55:43,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:43,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:43,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:43,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:43,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:43,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:55:43,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:43,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:43,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:43,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:43,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:43,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:43,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:43,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:55:43,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:43,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:55:43,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:43,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:43,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:43,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:43,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 07:55:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:43,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:43,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:43,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:43,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 07:55:43,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:43,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:43,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:43,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:43,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 07:55:43,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 07:55:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 07:55:43,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013862639] [2020-09-25 07:55:43,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:43,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:55:43,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333621155] [2020-09-25 07:55:43,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:55:43,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:43,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:55:43,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:43,840 INFO L87 Difference]: Start difference. First operand 922 states and 1103 transitions. Second operand 8 states. [2020-09-25 07:55:47,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:47,818 INFO L93 Difference]: Finished difference Result 2639 states and 3439 transitions. [2020-09-25 07:55:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:55:47,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-09-25 07:55:47,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:47,843 INFO L225 Difference]: With dead ends: 2639 [2020-09-25 07:55:47,843 INFO L226 Difference]: Without dead ends: 1540 [2020-09-25 07:55:47,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:47,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-09-25 07:55:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1522. [2020-09-25 07:55:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1522 states. [2020-09-25 07:55:47,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1816 transitions. [2020-09-25 07:55:47,933 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1816 transitions. Word has length 184 [2020-09-25 07:55:47,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:47,934 INFO L479 AbstractCegarLoop]: Abstraction has 1522 states and 1816 transitions. [2020-09-25 07:55:47,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:55:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1816 transitions. [2020-09-25 07:55:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 07:55:47,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:47,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:47,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:47,943 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:47,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1713485497, now seen corresponding path program 1 times [2020-09-25 07:55:47,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:47,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783615921] [2020-09-25 07:55:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:48,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:48,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:48,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:48,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:50,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:50,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:53,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 07:55:53,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:55:53,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 07:55:53,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:53,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 07:55:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 07:55:53,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:53,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:53,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:53,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:53,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:55:53,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:53,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:53,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:53,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:53,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:53,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:53,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 07:55:53,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:53,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 07:55:53,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:53,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:53,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:53,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:55:53,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:53,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783615921] [2020-09-25 07:55:53,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:53,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:53,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622576285] [2020-09-25 07:55:53,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:53,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:53,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:53,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:53,380 INFO L87 Difference]: Start difference. First operand 1522 states and 1816 transitions. Second operand 5 states. [2020-09-25 07:55:55,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:55,547 INFO L93 Difference]: Finished difference Result 4036 states and 4950 transitions. [2020-09-25 07:55:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:55,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 07:55:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:55,565 INFO L225 Difference]: With dead ends: 4036 [2020-09-25 07:55:55,566 INFO L226 Difference]: Without dead ends: 2381 [2020-09-25 07:55:55,572 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 07:55:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-09-25 07:55:55,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2288. [2020-09-25 07:55:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2288 states. [2020-09-25 07:55:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 2744 transitions. [2020-09-25 07:55:55,666 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 2744 transitions. Word has length 191 [2020-09-25 07:55:55,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:55,667 INFO L479 AbstractCegarLoop]: Abstraction has 2288 states and 2744 transitions. [2020-09-25 07:55:55,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:55,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 2744 transitions. [2020-09-25 07:55:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 07:55:55,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:55,677 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:55,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:55,678 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:55,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:55,679 INFO L82 PathProgramCache]: Analyzing trace with hash -755789642, now seen corresponding path program 1 times [2020-09-25 07:55:55,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:55,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775085435] [2020-09-25 07:55:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:55,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:55,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:56,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:56,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:00,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:00,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 07:56:00,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:56:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:56:00,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:00,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:56:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:56:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:00,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:00,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:56:00,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:00,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:56:00,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:00,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:00,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:00,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:56:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:00,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:00,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:00,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:56:00,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:00,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:56:00,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:00,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:00,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:56:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:00,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 07:56:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:00,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:00,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:00,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:56:00,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:00,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 07:56:00,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:00,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 07:56:00,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:00,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775085435] [2020-09-25 07:56:00,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:00,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:56:00,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753001560] [2020-09-25 07:56:00,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:00,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:00,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:00,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:00,967 INFO L87 Difference]: Start difference. First operand 2288 states and 2744 transitions. Second operand 7 states. [2020-09-25 07:56:03,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:03,479 INFO L93 Difference]: Finished difference Result 4708 states and 5704 transitions. [2020-09-25 07:56:03,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:56:03,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-09-25 07:56:03,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:03,494 INFO L225 Difference]: With dead ends: 4708 [2020-09-25 07:56:03,494 INFO L226 Difference]: Without dead ends: 2442 [2020-09-25 07:56:03,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:56:03,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2020-09-25 07:56:03,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2154. [2020-09-25 07:56:03,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2154 states. [2020-09-25 07:56:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 2542 transitions. [2020-09-25 07:56:03,573 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 2542 transitions. Word has length 200 [2020-09-25 07:56:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:03,574 INFO L479 AbstractCegarLoop]: Abstraction has 2154 states and 2542 transitions. [2020-09-25 07:56:03,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:03,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 2542 transitions. [2020-09-25 07:56:03,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 07:56:03,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:03,584 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:03,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:03,584 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:03,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:03,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1421897619, now seen corresponding path program 1 times [2020-09-25 07:56:03,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:03,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880778808] [2020-09-25 07:56:03,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:03,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking...