/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=0.5 --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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:43:01,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:43:01,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:43:01,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:43:01,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:43:01,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:43:01,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:43:01,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:43:01,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:43:01,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:43:01,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:43:01,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:43:01,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:43:01,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:43:01,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:43:01,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:43:01,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:43:01,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:43:01,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:43:01,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:43:01,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:43:01,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:43:01,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:43:01,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:43:01,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:43:01,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:43:01,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:43:01,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:43:01,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:43:01,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:43:01,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:43:01,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:43:01,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:43:01,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:43:01,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:43:01,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:43:01,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:43:01,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:43:01,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:43:01,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:43:01,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:43:01,644 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 14:43:01,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:43:01,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:43:01,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:43:01,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:43:01,705 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:43:01,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:43:01,708 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:43:01,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:43:01,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:43:01,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:43:01,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:43:01,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:43:01,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:43:01,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:43:01,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:43:01,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:43:01,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:43:01,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:43:01,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:43:01,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:43:01,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:43:01,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:43:01,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:43:01,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:43:01,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:43:01,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:43:01,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:43:01,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:43:01,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:43:01,714 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:43:02,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:43:02,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:43:02,211 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:43:02,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:43:02,213 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:43:02,215 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 14:43:02,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/953370483/59918b44885c47f69574b2425cf63bdd/FLAG9e56f40e9 [2020-09-25 14:43:02,986 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:43:02,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 14:43:03,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/953370483/59918b44885c47f69574b2425cf63bdd/FLAG9e56f40e9 [2020-09-25 14:43:03,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/953370483/59918b44885c47f69574b2425cf63bdd [2020-09-25 14:43:03,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:43:03,259 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:43:03,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:03,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:43:03,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:43:03,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:03" (1/1) ... [2020-09-25 14:43:03,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16768517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:03, skipping insertion in model container [2020-09-25 14:43:03,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:43:03" (1/1) ... [2020-09-25 14:43:03,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:43:03,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:43:03,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:03,863 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:43:04,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:43:04,109 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:43:04,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:04 WrapperNode [2020-09-25 14:43:04,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:43:04,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:43:04,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:43:04,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:43:04,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:04" (1/1) ... [2020-09-25 14:43:04,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:04" (1/1) ... [2020-09-25 14:43:04,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:04" (1/1) ... [2020-09-25 14:43:04,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:04" (1/1) ... [2020-09-25 14:43:04,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:04" (1/1) ... [2020-09-25 14:43:04,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:04" (1/1) ... [2020-09-25 14:43:04,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:04" (1/1) ... [2020-09-25 14:43:04,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:43:04,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:43:04,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:43:04,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:43:04,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:04" (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 14:43:04,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:43:04,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:43:04,337 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:43:04,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:43:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:43:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:43:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:43:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:43:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:43:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:43:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:43:05,874 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:43:05,875 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:43:05,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:05 BoogieIcfgContainer [2020-09-25 14:43:05,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:43:05,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:43:05,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:43:05,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:43:05,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:43:03" (1/3) ... [2020-09-25 14:43:05,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49eaa8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:05, skipping insertion in model container [2020-09-25 14:43:05,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:43:04" (2/3) ... [2020-09-25 14:43:05,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49eaa8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:43:05, skipping insertion in model container [2020-09-25 14:43:05,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:43:05" (3/3) ... [2020-09-25 14:43:05,901 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label54.c [2020-09-25 14:43:05,913 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:43:05,928 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:43:05,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:43:06,004 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:43:06,005 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:43:06,006 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:43:06,006 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:43:06,006 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:43:06,007 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:43:06,007 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:43:06,007 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:43:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:43:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 14:43:06,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:06,076 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] [2020-09-25 14:43:06,076 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:06,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:06,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2126243537, now seen corresponding path program 1 times [2020-09-25 14:43:06,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:06,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774685376] [2020-09-25 14:43:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:07,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 14:43:07,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:43:07,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1342 [2020-09-25 14:43:07,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:07,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:43:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:43:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:43:07,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:07,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:07,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:07,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:07,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:43:07,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:07,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:07,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:43:07,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:07,967 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 14:43:07,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774685376] [2020-09-25 14:43:07,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:07,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:43:07,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855890293] [2020-09-25 14:43:07,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:43:07,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:07,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:43:08,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:43:08,003 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:43:10,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:10,126 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 14:43:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:43:10,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-09-25 14:43:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:10,151 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 14:43:10,151 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 14:43:10,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 14:43:10,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 14:43:10,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 14:43:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 14:43:10,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 14:43:10,263 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 81 [2020-09-25 14:43:10,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:10,264 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 14:43:10,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:43:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 14:43:10,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 14:43:10,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:10,275 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, 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] [2020-09-25 14:43:10,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:43:10,275 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:10,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:10,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1687287808, now seen corresponding path program 1 times [2020-09-25 14:43:10,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:10,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076755503] [2020-09-25 14:43:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:10,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:10,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:11,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:11,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:15,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 14:43:15,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:15,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:43:15,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:15,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:43:15,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:43:15,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 14:43:15,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:15,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:15,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:15,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:15,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:43:15,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:15,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:43:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:15,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:15,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:15,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:15,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:15,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:15,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 14:43:15,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:15,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:15,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:43:15,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:43:15,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076755503] [2020-09-25 14:43:15,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:15,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:43:15,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819214224] [2020-09-25 14:43:15,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:43:15,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:15,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:43:15,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:43:15,748 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 14:43:17,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:17,586 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 14:43:17,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:43:17,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 14:43:17,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:17,597 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 14:43:17,597 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 14:43:17,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 14:43:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 14:43:17,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 14:43:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 14:43:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 14:43:17,650 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 160 [2020-09-25 14:43:17,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:17,654 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 14:43:17,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:43:17,654 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 14:43:17,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 14:43:17,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:17,664 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, 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] [2020-09-25 14:43:17,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:43:17,665 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:17,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:17,665 INFO L82 PathProgramCache]: Analyzing trace with hash 935848482, now seen corresponding path program 1 times [2020-09-25 14:43:17,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:17,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517122929] [2020-09-25 14:43:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:17,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:18,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:20,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:20,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:22,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:22,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 14:43:22,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4937 [2020-09-25 14:43:22,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:22,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:43:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:43:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 14:43:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:22,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:22,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:22,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:22,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:43:22,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:22,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:43:22,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:43:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:22,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:22,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:23,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:23,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:23,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:23,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:23,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 14:43:23,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:23,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:43:23,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:23,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517122929] [2020-09-25 14:43:23,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:23,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:43:23,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680116644] [2020-09-25 14:43:23,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:43:23,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:23,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:43:23,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:43:23,227 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 11 states. [2020-09-25 14:43:25,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:25,712 INFO L93 Difference]: Finished difference Result 1614 states and 2050 transitions. [2020-09-25 14:43:25,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:43:25,713 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2020-09-25 14:43:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:25,724 INFO L225 Difference]: With dead ends: 1614 [2020-09-25 14:43:25,725 INFO L226 Difference]: Without dead ends: 1015 [2020-09-25 14:43:25,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:43:25,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-09-25 14:43:25,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 995. [2020-09-25 14:43:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 14:43:25,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1212 transitions. [2020-09-25 14:43:25,775 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1212 transitions. Word has length 170 [2020-09-25 14:43:25,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:25,776 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1212 transitions. [2020-09-25 14:43:25,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:43:25,776 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1212 transitions. [2020-09-25 14:43:25,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 14:43:25,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:25,779 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, 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] [2020-09-25 14:43:25,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:43:25,779 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:25,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:25,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1528839770, now seen corresponding path program 1 times [2020-09-25 14:43:25,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:25,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025160690] [2020-09-25 14:43:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:25,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:26,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:28,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:28,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 14:43:28,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:43:28,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2976 [2020-09-25 14:43:28,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:28,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:43:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:43:28,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:43:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:28,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:28,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:28,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:28,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:28,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:28,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:43:28,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:28,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:28,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:28,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:28,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:29,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:29,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 14:43:29,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:29,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 14:43:29,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:29,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:43:29,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:29,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025160690] [2020-09-25 14:43:29,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:29,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:43:29,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229402383] [2020-09-25 14:43:29,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:29,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:29,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:29,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:29,210 INFO L87 Difference]: Start difference. First operand 995 states and 1212 transitions. Second operand 7 states. [2020-09-25 14:43:31,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:31,470 INFO L93 Difference]: Finished difference Result 2175 states and 2747 transitions. [2020-09-25 14:43:31,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:43:31,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-09-25 14:43:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:31,479 INFO L225 Difference]: With dead ends: 2175 [2020-09-25 14:43:31,479 INFO L226 Difference]: Without dead ends: 1345 [2020-09-25 14:43:31,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:43:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-09-25 14:43:31,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1323. [2020-09-25 14:43:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-09-25 14:43:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1572 transitions. [2020-09-25 14:43:31,531 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1572 transitions. Word has length 172 [2020-09-25 14:43:31,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:31,532 INFO L479 AbstractCegarLoop]: Abstraction has 1323 states and 1572 transitions. [2020-09-25 14:43:31,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1572 transitions. [2020-09-25 14:43:31,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-25 14:43:31,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:31,540 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:43:31,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:31,540 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:31,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:31,541 INFO L82 PathProgramCache]: Analyzing trace with hash 420038777, now seen corresponding path program 1 times [2020-09-25 14:43:31,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:31,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116913028] [2020-09-25 14:43:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:31,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:31,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:32,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:34,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:35,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:36,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-25 14:43:36,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:43:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 14:43:36,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:36,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:43:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 14:43:36,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:36,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:36,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:36,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:36,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:36,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:36,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:43:36,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:36,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:36,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:36,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:36,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:36,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:37,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:37,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 14:43:37,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:37,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:37,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:43:37,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:37,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:37,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:37,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 14:43:37,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:37,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 14:43:37,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:37,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:43:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 187 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:43:37,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116913028] [2020-09-25 14:43:37,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:37,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:43:37,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395513674] [2020-09-25 14:43:37,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:43:37,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:37,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:43:37,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:43:37,730 INFO L87 Difference]: Start difference. First operand 1323 states and 1572 transitions. Second operand 10 states. [2020-09-25 14:43:45,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:45,414 INFO L93 Difference]: Finished difference Result 4158 states and 5253 transitions. [2020-09-25 14:43:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 14:43:45,415 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 258 [2020-09-25 14:43:45,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:45,439 INFO L225 Difference]: With dead ends: 4158 [2020-09-25 14:43:45,439 INFO L226 Difference]: Without dead ends: 2969 [2020-09-25 14:43:45,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:43:45,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2020-09-25 14:43:45,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2925. [2020-09-25 14:43:45,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2020-09-25 14:43:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 3515 transitions. [2020-09-25 14:43:45,526 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 3515 transitions. Word has length 258 [2020-09-25 14:43:45,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:45,527 INFO L479 AbstractCegarLoop]: Abstraction has 2925 states and 3515 transitions. [2020-09-25 14:43:45,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:43:45,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 3515 transitions. [2020-09-25 14:43:45,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-09-25 14:43:45,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:45,539 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:43:45,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:45,539 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:45,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:45,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1878205722, now seen corresponding path program 1 times [2020-09-25 14:43:45,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:45,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388864997] [2020-09-25 14:43:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:45,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:45,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:48,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:49,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:50,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:50,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:50,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-09-25 14:43:50,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:43:50,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:43:50,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:50,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:50,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:43:50,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-09-25 14:43:50,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-25 14:43:50,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:50,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:50,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:50,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:50,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:50,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:50,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:43:50,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:50,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:50,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:50,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:50,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:50,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:50,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:50,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:50,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 14:43:50,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 14:43:50,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:50,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 14:43:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:50,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 14:43:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:51,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:51,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:51,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 14:43:51,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:51,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-25 14:43:51,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:51,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:51,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 14:43:51,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1