/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=0.4 --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_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:36:43,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:36:43,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:36:43,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:36:43,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:36:43,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:36:43,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:36:43,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:36:43,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:36:43,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:36:43,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:36:43,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:36:43,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:36:43,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:36:43,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:36:43,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:36:43,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:36:43,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:36:43,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:36:43,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:36:43,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:36:43,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:36:43,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:36:43,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:36:43,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:36:43,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:36:43,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:36:43,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:36:43,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:36:43,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:36:43,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:36:43,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:36:43,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:36:43,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:36:43,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:36:43,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:36:43,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:36:43,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:36:43,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:36:43,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:36:43,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:36:43,297 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 05:36:43,325 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:36:43,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:36:43,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:36:43,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:36:43,328 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:36:43,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:36:43,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:36:43,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:36:43,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:36:43,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:36:43,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:36:43,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:36:43,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:36:43,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:36:43,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:36:43,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:36:43,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:36:43,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:36:43,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:36:43,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:36:43,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:36:43,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:36:43,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:36:43,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:36:43,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:36:43,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:36:43,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:36:43,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:36:43,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:36:43,332 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:36:43,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:36:43,864 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:36:43,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:36:43,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:36:43,871 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:36:43,872 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 05:36:43,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d480b715/68af334e9f83424cbc3fad6186404f8a/FLAG8a3543791 [2020-09-25 05:36:44,599 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:36:44,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label41.c [2020-09-25 05:36:44,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d480b715/68af334e9f83424cbc3fad6186404f8a/FLAG8a3543791 [2020-09-25 05:36:44,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d480b715/68af334e9f83424cbc3fad6186404f8a [2020-09-25 05:36:44,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:36:44,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:36:44,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:44,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:36:44,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:36:44,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:44" (1/1) ... [2020-09-25 05:36:44,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6d7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:44, skipping insertion in model container [2020-09-25 05:36:44,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:44" (1/1) ... [2020-09-25 05:36:44,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:36:44,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:36:45,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:45,504 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:36:45,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:45,654 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:36:45,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:45 WrapperNode [2020-09-25 05:36:45,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:45,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:36:45,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:36:45,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:36:45,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:45" (1/1) ... [2020-09-25 05:36:45,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:45" (1/1) ... [2020-09-25 05:36:45,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:45" (1/1) ... [2020-09-25 05:36:45,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:45" (1/1) ... [2020-09-25 05:36:45,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:45" (1/1) ... [2020-09-25 05:36:45,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:45" (1/1) ... [2020-09-25 05:36:45,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:45" (1/1) ... [2020-09-25 05:36:45,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:36:45,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:36:45,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:36:45,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:36:45,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:45" (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 05:36:45,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:36:45,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:36:45,853 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:36:45,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:36:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:36:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:36:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:36:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:36:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:36:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:36:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:36:47,245 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:36:47,245 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:36:47,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:47 BoogieIcfgContainer [2020-09-25 05:36:47,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:36:47,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:36:47,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:36:47,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:36:47,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:36:44" (1/3) ... [2020-09-25 05:36:47,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511648b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:47, skipping insertion in model container [2020-09-25 05:36:47,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:45" (2/3) ... [2020-09-25 05:36:47,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511648b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:47, skipping insertion in model container [2020-09-25 05:36:47,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:47" (3/3) ... [2020-09-25 05:36:47,277 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label41.c [2020-09-25 05:36:47,289 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:36:47,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:36:47,327 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:36:47,373 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:36:47,374 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:36:47,374 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:36:47,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:36:47,374 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:36:47,374 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:36:47,374 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:36:47,374 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:36:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:36:47,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 05:36:47,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:47,454 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] [2020-09-25 05:36:47,455 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:47,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1858793511, now seen corresponding path program 1 times [2020-09-25 05:36:47,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:47,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228853945] [2020-09-25 05:36:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:47,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:50,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:50,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:52,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:52,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 05:36:52,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:36:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:36:52,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:52,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:52,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:36:52,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:36:52,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 05:36:52,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:36:52,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:52,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:52,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:52,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 05:36:52,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:52,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:36:52,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:36:53,033 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 05:36:53,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228853945] [2020-09-25 05:36:53,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:36:53,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:36:53,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172592099] [2020-09-25 05:36:53,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:36:53,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:53,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:36:53,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:36:53,077 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:36:55,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:55,501 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 05:36:55,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:36:55,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-09-25 05:36:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:55,543 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 05:36:55,543 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 05:36:55,553 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 05:36:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 05:36:55,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 05:36:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 05:36:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 05:36:55,662 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 116 [2020-09-25 05:36:55,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:55,663 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 05:36:55,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:36:55,663 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 05:36:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 05:36:55,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:55,672 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:55,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:36:55,673 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:55,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:55,673 INFO L82 PathProgramCache]: Analyzing trace with hash 525477933, now seen corresponding path program 1 times [2020-09-25 05:36:55,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:55,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441794151] [2020-09-25 05:36:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:55,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:55,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:57,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:58,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:58,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:59,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:59,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:00,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:00,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 05:37:00,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:37:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 05:37:00,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:00,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:37:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 05:37:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:37:00,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:00,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:00,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:00,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:00,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:00,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:00,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:00,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:00,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:00,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:00,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:00,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:00,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:00,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:00,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:00,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:00,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:37:00,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:01,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441794151] [2020-09-25 05:37:01,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:01,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:01,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080218314] [2020-09-25 05:37:01,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:01,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:01,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:01,004 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 05:37:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:02,903 INFO L93 Difference]: Finished difference Result 1662 states and 2128 transitions. [2020-09-25 05:37:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:02,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 05:37:02,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:02,912 INFO L225 Difference]: With dead ends: 1662 [2020-09-25 05:37:02,913 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 05:37:02,916 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 05:37:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 05:37:02,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 971. [2020-09-25 05:37:02,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-09-25 05:37:02,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1181 transitions. [2020-09-25 05:37:02,971 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1181 transitions. Word has length 134 [2020-09-25 05:37:02,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:02,972 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1181 transitions. [2020-09-25 05:37:02,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:02,972 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1181 transitions. [2020-09-25 05:37:02,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 05:37:02,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:02,979 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:37:02,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:02,980 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:02,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:02,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1960543630, now seen corresponding path program 1 times [2020-09-25 05:37:02,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:02,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683292878] [2020-09-25 05:37:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:03,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:03,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:03,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:06,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:06,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:07,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:08,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 05:37:08,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:37:08,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:37:08,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:08,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 05:37:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 05:37:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:08,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:08,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:08,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:08,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:08,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:08,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:08,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:08,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:08,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 05:37:08,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:08,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:37:08,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:08,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:08,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 05:37:08,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:08,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683292878] [2020-09-25 05:37:08,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:08,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:08,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314827807] [2020-09-25 05:37:08,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:08,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:08,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:08,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:08,225 INFO L87 Difference]: Start difference. First operand 971 states and 1181 transitions. Second operand 5 states. [2020-09-25 05:37:10,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:10,325 INFO L93 Difference]: Finished difference Result 2094 states and 2618 transitions. [2020-09-25 05:37:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:10,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 05:37:10,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:10,340 INFO L225 Difference]: With dead ends: 2094 [2020-09-25 05:37:10,341 INFO L226 Difference]: Without dead ends: 1145 [2020-09-25 05:37:10,345 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 05:37:10,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-09-25 05:37:10,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1123. [2020-09-25 05:37:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-09-25 05:37:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1356 transitions. [2020-09-25 05:37:10,404 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1356 transitions. Word has length 135 [2020-09-25 05:37:10,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:10,406 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1356 transitions. [2020-09-25 05:37:10,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:10,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1356 transitions. [2020-09-25 05:37:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 05:37:10,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:10,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:10,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:37:10,420 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:10,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:10,420 INFO L82 PathProgramCache]: Analyzing trace with hash 336019643, now seen corresponding path program 1 times [2020-09-25 05:37:10,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:10,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315362451] [2020-09-25 05:37:10,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:10,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:11,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:11,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:12,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:12,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:13,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:13,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:15,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:15,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 05:37:15,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:37:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:37:15,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:15,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:37:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 05:37:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:15,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:15,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:15,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:15,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:15,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:15,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:15,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:15,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:15,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:15,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:15,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:15,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:37:15,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:15,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:37:15,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:15,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:37:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:15,786 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 05:37:15,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315362451] [2020-09-25 05:37:15,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:15,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:37:15,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362053036] [2020-09-25 05:37:15,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:37:15,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:15,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:37:15,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:15,793 INFO L87 Difference]: Start difference. First operand 1123 states and 1356 transitions. Second operand 6 states. [2020-09-25 05:37:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:18,199 INFO L93 Difference]: Finished difference Result 2955 states and 3730 transitions. [2020-09-25 05:37:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:18,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 05:37:18,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:18,211 INFO L225 Difference]: With dead ends: 2955 [2020-09-25 05:37:18,212 INFO L226 Difference]: Without dead ends: 1854 [2020-09-25 05:37:18,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:18,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-09-25 05:37:18,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1783. [2020-09-25 05:37:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1783 states. [2020-09-25 05:37:18,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2204 transitions. [2020-09-25 05:37:18,276 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2204 transitions. Word has length 138 [2020-09-25 05:37:18,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:18,277 INFO L479 AbstractCegarLoop]: Abstraction has 1783 states and 2204 transitions. [2020-09-25 05:37:18,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:37:18,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2204 transitions. [2020-09-25 05:37:18,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 05:37:18,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:18,285 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:37:18,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:37:18,285 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:18,285 INFO L82 PathProgramCache]: Analyzing trace with hash -453985806, now seen corresponding path program 1 times [2020-09-25 05:37:18,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:18,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819061541] [2020-09-25 05:37:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:18,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:20,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:20,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 05:37:20,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:20,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1853 [2020-09-25 05:37:20,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:20,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 05:37:20,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 05:37:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:20,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:20,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:20,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:20,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:20,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:20,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:20,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:20,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:20,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:20,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:20,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:20,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:20,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:20,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:20,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:20,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:37:20,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:20,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:37:20,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:20,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:20,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:20,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:37:20,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:20,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819061541] [2020-09-25 05:37:20,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:20,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:37:20,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38113133] [2020-09-25 05:37:20,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:37:20,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:20,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:37:20,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:20,402 INFO L87 Difference]: Start difference. First operand 1783 states and 2204 transitions. Second operand 6 states. [2020-09-25 05:37:23,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:23,236 INFO L93 Difference]: Finished difference Result 4899 states and 6453 transitions. [2020-09-25 05:37:23,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:37:23,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-09-25 05:37:23,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:23,256 INFO L225 Difference]: With dead ends: 4899 [2020-09-25 05:37:23,256 INFO L226 Difference]: Without dead ends: 3138 [2020-09-25 05:37:23,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:37:23,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3138 states. [2020-09-25 05:37:23,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3138 to 2851. [2020-09-25 05:37:23,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2851 states. [2020-09-25 05:37:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 3591 transitions. [2020-09-25 05:37:23,348 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 3591 transitions. Word has length 142 [2020-09-25 05:37:23,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:23,348 INFO L479 AbstractCegarLoop]: Abstraction has 2851 states and 3591 transitions. [2020-09-25 05:37:23,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:37:23,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 3591 transitions. [2020-09-25 05:37:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 05:37:23,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:23,360 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:23,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:37:23,360 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:23,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:23,361 INFO L82 PathProgramCache]: Analyzing trace with hash 771470164, now seen corresponding path program 1 times [2020-09-25 05:37:23,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:23,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704566545] [2020-09-25 05:37:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:23,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:23,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:23,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:24,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:26,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:27,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:28,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:28,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 05:37:28,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:37:28,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 05:37:28,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:28,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:37:28,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 05:37:28,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:28,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:28,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:28,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:28,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:28,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:37:28,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:28,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:28,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:28,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:28,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:37:28,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:28,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:28,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:28,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 05:37:28,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 05:37:28,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:28,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:37:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:28,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704566545] [2020-09-25 05:37:28,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:28,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:37:28,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784852207] [2020-09-25 05:37:28,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:28,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:28,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:28,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:28,691 INFO L87 Difference]: Start difference. First operand 2851 states and 3591 transitions. Second operand 7 states. [2020-09-25 05:37:31,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:31,156 INFO L93 Difference]: Finished difference Result 8413 states and 10988 transitions. [2020-09-25 05:37:31,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:37:31,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-09-25 05:37:31,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:31,189 INFO L225 Difference]: With dead ends: 8413 [2020-09-25 05:37:31,190 INFO L226 Difference]: Without dead ends: 5584 [2020-09-25 05:37:31,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:37:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5584 states. [2020-09-25 05:37:31,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5584 to 5205. [2020-09-25 05:37:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5205 states. [2020-09-25 05:37:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 6590 transitions. [2020-09-25 05:37:31,363 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 6590 transitions. Word has length 164 [2020-09-25 05:37:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:31,363 INFO L479 AbstractCegarLoop]: Abstraction has 5205 states and 6590 transitions. [2020-09-25 05:37:31,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:31,363 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 6590 transitions. [2020-09-25 05:37:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 05:37:31,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:31,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:31,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:37:31,385 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:31,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:31,386 INFO L82 PathProgramCache]: Analyzing trace with hash 979375644, now seen corresponding path program 1 times [2020-09-25 05:37:31,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:31,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006481791] [2020-09-25 05:37:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:31,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:31,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:31,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:31,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:32,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:32,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking...