/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:06:11,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:11,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:11,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:11,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:11,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:11,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:11,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:11,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:11,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:11,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:11,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:11,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:11,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:11,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:11,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:11,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:11,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:11,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:11,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:11,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:11,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:11,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:11,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:11,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:11,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:11,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:11,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:11,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:11,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:11,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:11,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:11,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:11,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:11,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:11,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:11,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:11,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:11,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:11,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:11,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:11,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:06:11,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:11,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:11,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:11,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:11,333 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:11,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:11,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:11,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:11,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:11,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:11,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:11,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:11,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:11,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:11,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:11,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:11,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:11,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:11,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:11,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:11,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:11,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:11,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:11,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:11,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:11,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:11,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:11,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:11,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:11,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:06:11,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:11,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:11,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:11,868 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:11,868 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:11,870 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 09:06:11,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f53100f58/7a87e25c39a0476384cb572a6b47d18e/FLAGbd128315f [2020-09-25 09:06:12,617 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:12,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 09:06:12,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f53100f58/7a87e25c39a0476384cb572a6b47d18e/FLAGbd128315f [2020-09-25 09:06:12,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f53100f58/7a87e25c39a0476384cb572a6b47d18e [2020-09-25 09:06:12,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:12,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:12,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:12,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:12,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:12,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:12" (1/1) ... [2020-09-25 09:06:12,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:12, skipping insertion in model container [2020-09-25 09:06:12,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:12" (1/1) ... [2020-09-25 09:06:12,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:12,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:13,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:13,419 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:13,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:13,734 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:13,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:13 WrapperNode [2020-09-25 09:06:13,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:13,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:13,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:13,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:13,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:13" (1/1) ... [2020-09-25 09:06:13,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:13" (1/1) ... [2020-09-25 09:06:13,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:13" (1/1) ... [2020-09-25 09:06:13,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:13" (1/1) ... [2020-09-25 09:06:13,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:13" (1/1) ... [2020-09-25 09:06:13,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:13" (1/1) ... [2020-09-25 09:06:13,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:13" (1/1) ... [2020-09-25 09:06:13,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:13,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:13,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:13,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:13,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:13,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:13,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:15,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:15,452 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:15,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:15 BoogieIcfgContainer [2020-09-25 09:06:15,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:15,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:15,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:15,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:15,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:12" (1/3) ... [2020-09-25 09:06:15,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:15, skipping insertion in model container [2020-09-25 09:06:15,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:13" (2/3) ... [2020-09-25 09:06:15,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:15, skipping insertion in model container [2020-09-25 09:06:15,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:15" (3/3) ... [2020-09-25 09:06:15,473 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-25 09:06:15,486 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:15,498 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:15,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:15,563 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:15,563 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:15,563 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:15,564 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:15,564 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:15,564 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:15,564 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:15,565 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:15,599 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:06:15,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 09:06:15,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:15,613 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] [2020-09-25 09:06:15,614 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:15,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:15,622 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-25 09:06:15,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:15,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159932049] [2020-09-25 09:06:15,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:15,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:16,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:16,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:16,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:16,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-25 09:06:16,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:16,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:16,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:16,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:16,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 09:06:16,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:06:17,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:17,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:17,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:17,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:06:17,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:17,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:17,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:17,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159932049] [2020-09-25 09:06:17,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:17,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:06:17,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955414621] [2020-09-25 09:06:17,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:06:17,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:17,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:06:17,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:06:17,119 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:06:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:19,134 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 09:06:19,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:06:19,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-25 09:06:19,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:19,160 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 09:06:19,160 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 09:06:19,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 09:06:19,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 09:06:19,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 09:06:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 09:06:19,278 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-25 09:06:19,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:19,279 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 09:06:19,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:06:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 09:06:19,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 09:06:19,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:19,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:19,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:19,290 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:19,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:19,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-25 09:06:19,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:19,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957393951] [2020-09-25 09:06:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:19,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:21,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 09:06:21,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:21,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2365 [2020-09-25 09:06:21,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:21,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:06:21,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 09:06:21,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:21,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:21,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:21,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:21,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:21,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:06:21,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:21,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:21,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:21,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:21,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:06:21,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:21,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:21,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:22,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:22,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 09:06:22,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:22,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 09:06:22,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:22,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:22,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:22,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:06:22,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957393951] [2020-09-25 09:06:22,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:22,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:06:22,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537894201] [2020-09-25 09:06:22,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:06:22,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:22,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:06:22,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:22,111 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 6 states. [2020-09-25 09:06:24,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:24,195 INFO L93 Difference]: Finished difference Result 1437 states and 1858 transitions. [2020-09-25 09:06:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:06:24,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-25 09:06:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:24,203 INFO L225 Difference]: With dead ends: 1437 [2020-09-25 09:06:24,203 INFO L226 Difference]: Without dead ends: 909 [2020-09-25 09:06:24,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:24,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-09-25 09:06:24,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 859. [2020-09-25 09:06:24,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-09-25 09:06:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1029 transitions. [2020-09-25 09:06:24,270 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1029 transitions. Word has length 156 [2020-09-25 09:06:24,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:24,271 INFO L479 AbstractCegarLoop]: Abstraction has 859 states and 1029 transitions. [2020-09-25 09:06:24,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:06:24,271 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1029 transitions. [2020-09-25 09:06:24,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 09:06:24,276 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:24,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:24,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:24,277 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:24,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:24,277 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-25 09:06:24,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:24,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823886653] [2020-09-25 09:06:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:24,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:29,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 09:06:29,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:29,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 09:06:29,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:29,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:06:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:06:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-25 09:06:29,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:29,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:29,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:29,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:29,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:29,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:06:29,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:29,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:06:29,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:29,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:29,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:29,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:29,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:29,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 09:06:29,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:29,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:29,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 09:06:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:29,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823886653] [2020-09-25 09:06:29,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:29,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:06:29,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047085256] [2020-09-25 09:06:29,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:06:29,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:29,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:06:29,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:29,753 INFO L87 Difference]: Start difference. First operand 859 states and 1029 transitions. Second operand 8 states. [2020-09-25 09:06:33,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:33,199 INFO L93 Difference]: Finished difference Result 2966 states and 3761 transitions. [2020-09-25 09:06:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:33,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 09:06:33,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:33,218 INFO L225 Difference]: With dead ends: 2966 [2020-09-25 09:06:33,218 INFO L226 Difference]: Without dead ends: 2122 [2020-09-25 09:06:33,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:06:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2020-09-25 09:06:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2001. [2020-09-25 09:06:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2001 states. [2020-09-25 09:06:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2475 transitions. [2020-09-25 09:06:33,346 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2475 transitions. Word has length 165 [2020-09-25 09:06:33,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:33,351 INFO L479 AbstractCegarLoop]: Abstraction has 2001 states and 2475 transitions. [2020-09-25 09:06:33,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:06:33,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2475 transitions. [2020-09-25 09:06:33,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 09:06:33,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:33,360 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:06:33,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:06:33,360 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:33,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:33,361 INFO L82 PathProgramCache]: Analyzing trace with hash -892390744, now seen corresponding path program 1 times [2020-09-25 09:06:33,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:33,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430069101] [2020-09-25 09:06:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:33,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:36,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:36,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:37,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:37,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:37,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 09:06:37,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:06:37,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4351 [2020-09-25 09:06:37,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:37,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:06:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 09:06:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 09:06:37,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:37,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:37,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:37,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:37,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:37,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:06:37,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:37,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:37,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:37,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:37,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:38,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:38,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:38,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 09:06:38,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:38,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:38,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 09:06:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:38,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:06:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:38,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:38,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 09:06:38,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:38,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 09:06:38,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:38,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:38,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 129 proven. 56 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:06:38,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430069101] [2020-09-25 09:06:38,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:38,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:06:38,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725118342] [2020-09-25 09:06:38,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:06:38,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:38,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:06:38,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:38,457 INFO L87 Difference]: Start difference. First operand 2001 states and 2475 transitions. Second operand 8 states. [2020-09-25 09:06:42,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:42,155 INFO L93 Difference]: Finished difference Result 5457 states and 7131 transitions. [2020-09-25 09:06:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:06:42,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 235 [2020-09-25 09:06:42,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:42,175 INFO L225 Difference]: With dead ends: 5457 [2020-09-25 09:06:42,175 INFO L226 Difference]: Without dead ends: 3471 [2020-09-25 09:06:42,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:06:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3471 states. [2020-09-25 09:06:42,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3471 to 3412. [2020-09-25 09:06:42,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3412 states. [2020-09-25 09:06:42,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 4395 transitions. [2020-09-25 09:06:42,300 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 4395 transitions. Word has length 235 [2020-09-25 09:06:42,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:42,301 INFO L479 AbstractCegarLoop]: Abstraction has 3412 states and 4395 transitions. [2020-09-25 09:06:42,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:06:42,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 4395 transitions. [2020-09-25 09:06:42,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 09:06:42,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:42,310 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:06:42,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:42,310 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:42,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1938914842, now seen corresponding path program 1 times [2020-09-25 09:06:42,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:42,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460388172] [2020-09-25 09:06:42,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:42,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:44,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:47,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 09:06:47,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:06:47,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 09:06:47,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:47,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:47,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:47,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 09:06:47,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:47,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:47,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:47,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:47,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:06:47,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:47,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:47,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:47,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:47,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:47,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:47,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:47,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:47,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 09:06:47,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:47,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:47,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:47,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:47,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 09:06:47,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:47,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:06:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:48,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:06:48,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:48,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-09-25 09:06:48,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:48,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:48,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:48,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 09:06:48,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460388172] [2020-09-25 09:06:48,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:48,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:48,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782199884] [2020-09-25 09:06:48,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:48,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:48,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:48,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:48,351 INFO L87 Difference]: Start difference. First operand 3412 states and 4395 transitions. Second operand 10 states. [2020-09-25 09:06:52,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:52,187 INFO L93 Difference]: Finished difference Result 7330 states and 9662 transitions. [2020-09-25 09:06:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:52,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 248 [2020-09-25 09:06:52,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:52,214 INFO L225 Difference]: With dead ends: 7330 [2020-09-25 09:06:52,214 INFO L226 Difference]: Without dead ends: 4064 [2020-09-25 09:06:52,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:06:52,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2020-09-25 09:06:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 3871. [2020-09-25 09:06:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3871 states. [2020-09-25 09:06:52,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3871 states to 3871 states and 4959 transitions. [2020-09-25 09:06:52,340 INFO L78 Accepts]: Start accepts. Automaton has 3871 states and 4959 transitions. Word has length 248 [2020-09-25 09:06:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:52,341 INFO L479 AbstractCegarLoop]: Abstraction has 3871 states and 4959 transitions. [2020-09-25 09:06:52,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3871 states and 4959 transitions. [2020-09-25 09:06:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 09:06:52,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:52,348 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:06:52,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:06:52,349 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:52,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1668169033, now seen corresponding path program 1 times [2020-09-25 09:06:52,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:52,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519276359] [2020-09-25 09:06:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:52,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:52,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:54,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:56,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:57,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:57,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:57,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-09-25 09:06:57,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:06:57,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 09:06:57,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:57,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:57,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-09-25 09:06:57,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:57,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:57,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:57,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:57,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:57,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:57,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:06:57,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:57,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:57,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:57,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:57,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:57,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:57,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:57,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:57,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 09:06:57,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:57,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:57,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 09:06:57,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:57,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:06:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:58,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:58,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:58,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 09:06:58,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:58,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-09-25 09:06:58,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:58,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 09:06:58,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 09:06:58,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519276359] [2020-09-25 09:06:58,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:58,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:58,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292536419] [2020-09-25 09:06:58,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:58,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:58,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:58,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:58,477 INFO L87 Difference]: Start difference. First operand 3871 states and 4959 transitions. Second operand 10 states.