/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_label47.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:10:12,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:10:12,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:10:12,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:10:12,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:10:12,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:10:12,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:10:12,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:10:12,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:10:12,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:10:12,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:10:12,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:10:12,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:10:12,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:10:12,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:10:12,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:10:12,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:10:12,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:10:12,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:10:12,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:10:12,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:10:12,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:10:12,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:10:12,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:10:12,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:10:12,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:10:12,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:10:12,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:10:12,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:10:12,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:10:12,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:10:12,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:10:12,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:10:12,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:10:12,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:10:12,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:10:12,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:10:12,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:10:12,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:10:12,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:10:12,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:10:12,654 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 10:10:12,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:10:12,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:10:12,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:10:12,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:10:12,704 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:10:12,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:10:12,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:10:12,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:10:12,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:10:12,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:10:12,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:10:12,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:10:12,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:10:12,708 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:10:12,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:10:12,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:10:12,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:10:12,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:10:12,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:10:12,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:10:12,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:10:12,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:12,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:10:12,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:10:12,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:10:12,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:10:12,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:10:12,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:10:12,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:10:12,711 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:10:13,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:13,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:13,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:13,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:13,240 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:13,241 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2020-09-25 10:10:13,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c6e8eb82/945afb21d1fb401aabad694c3ed0c2f2/FLAG23874d698 [2020-09-25 10:10:14,003 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:14,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label47.c [2020-09-25 10:10:14,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c6e8eb82/945afb21d1fb401aabad694c3ed0c2f2/FLAG23874d698 [2020-09-25 10:10:14,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c6e8eb82/945afb21d1fb401aabad694c3ed0c2f2 [2020-09-25 10:10:14,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:14,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:14,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:14,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:14,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:14,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:14" (1/1) ... [2020-09-25 10:10:14,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c77fbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:14, skipping insertion in model container [2020-09-25 10:10:14,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:14" (1/1) ... [2020-09-25 10:10:14,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:14,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:14,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:14,960 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:15,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:15,227 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:15,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:15 WrapperNode [2020-09-25 10:10:15,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:15,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:15,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:15,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:15,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:15" (1/1) ... [2020-09-25 10:10:15,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:15" (1/1) ... [2020-09-25 10:10:15,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:15" (1/1) ... [2020-09-25 10:10:15,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:15" (1/1) ... [2020-09-25 10:10:15,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:15" (1/1) ... [2020-09-25 10:10:15,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:15" (1/1) ... [2020-09-25 10:10:15,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:15" (1/1) ... [2020-09-25 10:10:15,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:15,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:15,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:15,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:15,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:15" (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 10:10:15,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:15,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:16,846 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:16,846 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:16,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:16 BoogieIcfgContainer [2020-09-25 10:10:16,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:16,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:16,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:16,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:16,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:14" (1/3) ... [2020-09-25 10:10:16,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79211916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:16, skipping insertion in model container [2020-09-25 10:10:16,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:15" (2/3) ... [2020-09-25 10:10:16,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79211916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:16, skipping insertion in model container [2020-09-25 10:10:16,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:16" (3/3) ... [2020-09-25 10:10:16,866 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label47.c [2020-09-25 10:10:16,876 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:16,886 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:16,908 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:16,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:16,942 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:16,942 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:16,942 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:16,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:16,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:16,943 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:16,943 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:16,978 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:10:16,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 10:10:17,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:17,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:17,002 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:17,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:17,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1682076970, now seen corresponding path program 1 times [2020-09-25 10:10:17,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:17,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563426525] [2020-09-25 10:10:17,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:18,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:18,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:21,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:22,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 10:10:22,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:10:22,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:10:22,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:22,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 10:10:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:10:22,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:22,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:22,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:22,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:22,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 10:10:22,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:22,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:22,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:10:22,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:22,612 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 10:10:22,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563426525] [2020-09-25 10:10:22,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:22,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:22,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188980715] [2020-09-25 10:10:22,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:22,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:22,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:22,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:22,654 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:10:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:25,215 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 10:10:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:25,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-09-25 10:10:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:25,263 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 10:10:25,264 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 10:10:25,274 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 10:10:25,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 10:10:25,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 10:10:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 10:10:25,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 10:10:25,390 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 133 [2020-09-25 10:10:25,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:25,391 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 10:10:25,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:25,391 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 10:10:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 10:10:25,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:25,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:25,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:25,401 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:25,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:25,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1624674134, now seen corresponding path program 1 times [2020-09-25 10:10:25,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:25,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725824888] [2020-09-25 10:10:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:25,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:30,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:30,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 10:10:30,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:10:30,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 10:10:30,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:30,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:10:30,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 10:10:30,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:30,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:30,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:30,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:30,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:30,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:30,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:10:30,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:30,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:30,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:30,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:30,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:30,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 10:10:30,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:30,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:30,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:30,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:30,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:10:30,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:30,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:10:30,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:30,782 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 10:10:30,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725824888] [2020-09-25 10:10:30,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:30,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:10:30,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836528486] [2020-09-25 10:10:30,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:10:30,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:30,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:10:30,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:30,791 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 10:10:32,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:32,800 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 10:10:32,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:10:32,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-09-25 10:10:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:32,809 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 10:10:32,809 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 10:10:32,813 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 10:10:32,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 10:10:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 10:10:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 10:10:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1282 transitions. [2020-09-25 10:10:32,868 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1282 transitions. Word has length 151 [2020-09-25 10:10:32,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:32,869 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1282 transitions. [2020-09-25 10:10:32,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:10:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1282 transitions. [2020-09-25 10:10:32,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 10:10:32,874 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:32,875 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:32,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:32,875 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:32,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:32,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1984167013, now seen corresponding path program 1 times [2020-09-25 10:10:32,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:32,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593423335] [2020-09-25 10:10:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:35,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:37,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:37,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 10:10:37,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:10:37,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:10:37,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:37,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:37,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:10:37,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 10:10:37,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:10:37,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:38,716 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-09-25 10:10:38,882 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-09-25 10:10:39,034 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2020-09-25 10:10:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:39,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:39,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:39,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:39,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:10:39,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:39,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:39,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:39,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:39,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:39,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:39,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:39,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:39,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:39,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:10:39,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:39,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:39,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:39,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:10:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:39,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:39,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:39,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:39,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:39,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 10:10:39,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:39,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:10:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:39,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:10:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 10:10:39,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593423335] [2020-09-25 10:10:39,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:39,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:10:39,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501538484] [2020-09-25 10:10:39,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:10:39,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:39,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:10:39,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:10:39,540 INFO L87 Difference]: Start difference. First operand 1036 states and 1282 transitions. Second operand 13 states. [2020-09-25 10:10:40,172 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-25 10:10:40,526 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-09-25 10:10:40,911 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-25 10:10:41,992 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-09-25 10:10:42,607 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-09-25 10:10:42,758 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-09-25 10:10:43,439 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-09-25 10:10:45,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:45,100 INFO L93 Difference]: Finished difference Result 2886 states and 3809 transitions. [2020-09-25 10:10:45,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 10:10:45,103 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 168 [2020-09-25 10:10:45,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:45,117 INFO L225 Difference]: With dead ends: 2886 [2020-09-25 10:10:45,117 INFO L226 Difference]: Without dead ends: 1608 [2020-09-25 10:10:45,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:10:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-09-25 10:10:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1584. [2020-09-25 10:10:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-09-25 10:10:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 1903 transitions. [2020-09-25 10:10:45,196 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 1903 transitions. Word has length 168 [2020-09-25 10:10:45,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:45,197 INFO L479 AbstractCegarLoop]: Abstraction has 1584 states and 1903 transitions. [2020-09-25 10:10:45,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:10:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 1903 transitions. [2020-09-25 10:10:45,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 10:10:45,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:45,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:45,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:10:45,208 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:45,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1527084426, now seen corresponding path program 1 times [2020-09-25 10:10:45,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:45,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416130427] [2020-09-25 10:10:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:45,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:46,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:47,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:50,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:50,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 10:10:50,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:50,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 10:10:50,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:50,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 10:10:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 10:10:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:50,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:50,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:50,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:50,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:50,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:50,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:10:50,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:50,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:50,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:50,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:50,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:50,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:50,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:10:50,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 10:10:50,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:50,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:10:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:50,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416130427] [2020-09-25 10:10:50,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:50,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:10:50,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433924347] [2020-09-25 10:10:50,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:10:50,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:50,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:10:50,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:50,491 INFO L87 Difference]: Start difference. First operand 1584 states and 1903 transitions. Second operand 5 states. [2020-09-25 10:10:52,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:52,483 INFO L93 Difference]: Finished difference Result 3498 states and 4303 transitions. [2020-09-25 10:10:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:10:52,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 10:10:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:52,496 INFO L225 Difference]: With dead ends: 3498 [2020-09-25 10:10:52,496 INFO L226 Difference]: Without dead ends: 1936 [2020-09-25 10:10:52,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:52,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2020-09-25 10:10:52,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1888. [2020-09-25 10:10:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2020-09-25 10:10:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2240 transitions. [2020-09-25 10:10:52,591 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2240 transitions. Word has length 168 [2020-09-25 10:10:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:52,592 INFO L479 AbstractCegarLoop]: Abstraction has 1888 states and 2240 transitions. [2020-09-25 10:10:52,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:10:52,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2240 transitions. [2020-09-25 10:10:52,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 10:10:52,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:52,601 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:52,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:10:52,605 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:52,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1915300853, now seen corresponding path program 1 times [2020-09-25 10:10:52,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:52,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359055160] [2020-09-25 10:10:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:52,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:52,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:52,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:54,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:57,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:57,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 10:10:57,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:10:57,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 10:10:57,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:57,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:57,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:10:57,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-09-25 10:10:57,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 10:10:57,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:58,306 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2020-09-25 10:10:58,467 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-09-25 10:10:58,614 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 34 [2020-09-25 10:10:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:58,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:58,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:10:58,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:58,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:58,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:58,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:58,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:58,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:10:58,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:58,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:10:58,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:58,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:58,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:58,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:58,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 10:10:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:58,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:59,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:59,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 10:10:59,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:59,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 10:10:59,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:59,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:59,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:59,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:59,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:10:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 10:10:59,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359055160] [2020-09-25 10:10:59,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:59,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:10:59,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378824726] [2020-09-25 10:10:59,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:10:59,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:59,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:10:59,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:10:59,446 INFO L87 Difference]: Start difference. First operand 1888 states and 2240 transitions. Second operand 14 states.