/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=0.2 --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_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:16,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:16,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:16,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:16,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:16,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:16,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:16,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:16,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:16,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:16,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:16,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:16,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:16,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:16,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:16,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:16,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:16,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:16,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:16,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:16,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:16,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:16,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:16,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:16,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:16,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:16,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:16,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:16,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:16,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:16,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:16,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:16,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:16,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:16,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:16,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:16,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:16,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:16,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:16,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:16,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:16,951 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 11:18:16,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:16,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:16,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:16,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:16,980 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:16,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:16,980 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:16,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:16,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:16,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:16,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:16,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:16,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:16,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:16,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:16,982 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:16,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:16,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:16,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:16,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:16,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:16,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:16,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:16,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:16,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:16,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:16,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:16,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:16,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:16,985 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:18:17,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:17,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:17,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:17,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:17,433 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:17,435 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 11:18:17,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8697ead12/99042240a3944114b4a00114aac0ccf6/FLAG39e9e0da9 [2020-09-25 11:18:18,144 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:18,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 11:18:18,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8697ead12/99042240a3944114b4a00114aac0ccf6/FLAG39e9e0da9 [2020-09-25 11:18:18,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8697ead12/99042240a3944114b4a00114aac0ccf6 [2020-09-25 11:18:18,426 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:18,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:18,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:18,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:18,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:18,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:18" (1/1) ... [2020-09-25 11:18:18,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:18, skipping insertion in model container [2020-09-25 11:18:18,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:18" (1/1) ... [2020-09-25 11:18:18,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:18,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:18,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:19,100 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:19,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:19,217 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:19,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19 WrapperNode [2020-09-25 11:18:19,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:19,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:19,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:19,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:19,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:19,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:19,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:19,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:19,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (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 11:18:19,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:19,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:19,445 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:19,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:20,893 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:20,894 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:20,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:20 BoogieIcfgContainer [2020-09-25 11:18:20,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:20,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:20,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:20,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:20,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:18" (1/3) ... [2020-09-25 11:18:20,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:20, skipping insertion in model container [2020-09-25 11:18:20,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (2/3) ... [2020-09-25 11:18:20,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:20, skipping insertion in model container [2020-09-25 11:18:20,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:20" (3/3) ... [2020-09-25 11:18:20,913 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label04.c [2020-09-25 11:18:20,927 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:20,941 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:20,968 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:21,002 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:21,003 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:21,003 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:21,003 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:21,003 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:21,003 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:21,004 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:21,004 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:21,033 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:18:21,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 11:18:21,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:21,048 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] [2020-09-25 11:18:21,048 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:21,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1435975873, now seen corresponding path program 1 times [2020-09-25 11:18:21,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:21,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955057888] [2020-09-25 11:18:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:21,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:21,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:21,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:21,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 11:18:21,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:21,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-09-25 11:18:21,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:21,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:21,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:21,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:18:21,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 11:18:21,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:18:22,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:22,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:22,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:22,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:18:22,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:22,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:18:22,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:22,224 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 11:18:22,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955057888] [2020-09-25 11:18:22,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:22,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:18:22,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022519536] [2020-09-25 11:18:22,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:18:22,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:22,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:18:22,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:18:22,263 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:18:24,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:24,241 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 11:18:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:18:24,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-25 11:18:24,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:24,266 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 11:18:24,266 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 11:18:24,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:24,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 11:18:24,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 11:18:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 11:18:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 11:18:24,384 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 85 [2020-09-25 11:18:24,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:24,385 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 11:18:24,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:18:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 11:18:24,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 11:18:24,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:24,397 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, 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] [2020-09-25 11:18:24,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:24,397 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:24,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:24,398 INFO L82 PathProgramCache]: Analyzing trace with hash -2117933451, now seen corresponding path program 1 times [2020-09-25 11:18:24,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:24,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716457040] [2020-09-25 11:18:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:24,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:26,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:26,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:26,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 11:18:26,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2356 [2020-09-25 11:18:26,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:26,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:18:26,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 11:18:26,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:18:26,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:26,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:26,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:26,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:26,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:18:26,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:26,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:26,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:18:26,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:27,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:27,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:18:27,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:27,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 11:18:27,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:27,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:18:27,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:18:27,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716457040] [2020-09-25 11:18:27,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:27,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:18:27,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40795864] [2020-09-25 11:18:27,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:18:27,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:27,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:18:27,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:18:27,347 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 8 states. [2020-09-25 11:18:30,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:30,351 INFO L93 Difference]: Finished difference Result 1743 states and 2321 transitions. [2020-09-25 11:18:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:18:30,352 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 11:18:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:30,362 INFO L225 Difference]: With dead ends: 1743 [2020-09-25 11:18:30,362 INFO L226 Difference]: Without dead ends: 1215 [2020-09-25 11:18:30,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:18:30,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2020-09-25 11:18:30,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1171. [2020-09-25 11:18:30,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-09-25 11:18:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1461 transitions. [2020-09-25 11:18:30,428 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1461 transitions. Word has length 165 [2020-09-25 11:18:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:30,429 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1461 transitions. [2020-09-25 11:18:30,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:18:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1461 transitions. [2020-09-25 11:18:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 11:18:30,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:30,433 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:30,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:30,434 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:30,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:30,434 INFO L82 PathProgramCache]: Analyzing trace with hash 185368306, now seen corresponding path program 1 times [2020-09-25 11:18:30,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:30,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122968337] [2020-09-25 11:18:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:30,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:31,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:32,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:35,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:35,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:35,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:35,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 11:18:35,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:18:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 11:18:35,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:35,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:35,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-09-25 11:18:35,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:35,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:35,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:35,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:35,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:35,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:18:35,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:35,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:35,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:35,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:35,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:35,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:35,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:18:35,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:35,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 11:18:35,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:35,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:35,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:35,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:35,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:18:35,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:35,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122968337] [2020-09-25 11:18:35,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:35,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:18:35,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746122966] [2020-09-25 11:18:35,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:18:35,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:35,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:18:35,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:18:35,918 INFO L87 Difference]: Start difference. First operand 1171 states and 1461 transitions. Second operand 8 states. [2020-09-25 11:18:39,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:39,097 INFO L93 Difference]: Finished difference Result 3416 states and 4524 transitions. [2020-09-25 11:18:39,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:18:39,098 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2020-09-25 11:18:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:39,114 INFO L225 Difference]: With dead ends: 3416 [2020-09-25 11:18:39,114 INFO L226 Difference]: Without dead ends: 2260 [2020-09-25 11:18:39,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:18:39,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2020-09-25 11:18:39,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 2127. [2020-09-25 11:18:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2127 states. [2020-09-25 11:18:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 2596 transitions. [2020-09-25 11:18:39,198 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 2596 transitions. Word has length 174 [2020-09-25 11:18:39,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:39,199 INFO L479 AbstractCegarLoop]: Abstraction has 2127 states and 2596 transitions. [2020-09-25 11:18:39,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:18:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 2596 transitions. [2020-09-25 11:18:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 11:18:39,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:39,208 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, 3, 3, 3, 3, 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] [2020-09-25 11:18:39,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:39,209 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:39,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:39,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1609125249, now seen corresponding path program 1 times [2020-09-25 11:18:39,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:39,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643114278] [2020-09-25 11:18:39,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:44,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 11:18:44,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:18:44,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:44,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:44,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:18:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:44,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:44,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:44,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:44,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:44,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:18:44,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:44,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:44,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:44,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:44,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:44,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:44,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:18:44,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:44,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 11:18:44,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:44,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:44,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:44,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:18:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:44,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:18:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:44,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:44,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:18:44,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:44,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 11:18:44,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:44,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:44,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:18:44,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:18:44,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643114278] [2020-09-25 11:18:44,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:44,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:44,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83847654] [2020-09-25 11:18:44,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:44,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:44,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:44,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:44,860 INFO L87 Difference]: Start difference. First operand 2127 states and 2596 transitions. Second operand 10 states. [2020-09-25 11:18:49,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:49,207 INFO L93 Difference]: Finished difference Result 5011 states and 6621 transitions. [2020-09-25 11:18:49,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 11:18:49,208 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 253 [2020-09-25 11:18:49,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:49,230 INFO L225 Difference]: With dead ends: 5011 [2020-09-25 11:18:49,230 INFO L226 Difference]: Without dead ends: 3845 [2020-09-25 11:18:49,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:18:49,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3845 states. [2020-09-25 11:18:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3845 to 3448. [2020-09-25 11:18:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3448 states. [2020-09-25 11:18:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3448 states to 3448 states and 4351 transitions. [2020-09-25 11:18:49,362 INFO L78 Accepts]: Start accepts. Automaton has 3448 states and 4351 transitions. Word has length 253 [2020-09-25 11:18:49,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:49,363 INFO L479 AbstractCegarLoop]: Abstraction has 3448 states and 4351 transitions. [2020-09-25 11:18:49,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:18:49,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3448 states and 4351 transitions. [2020-09-25 11:18:49,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-09-25 11:18:49,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:49,371 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:49,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:49,372 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:49,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:49,372 INFO L82 PathProgramCache]: Analyzing trace with hash -2077380539, now seen corresponding path program 1 times [2020-09-25 11:18:49,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:49,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552676635] [2020-09-25 11:18:49,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:49,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:50,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:50,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:54,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:54,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-09-25 11:18:54,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:54,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 11:18:54,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:54,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:54,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:18:54,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-09-25 11:18:54,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:18:54,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:54,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:54,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:54,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:54,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:54,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:18:54,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:54,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:54,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:18:54,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:54,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:54,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:54,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:54,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:18:54,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:54,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 11:18:54,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:54,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:18:54,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:54,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:18:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:54,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:55,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:55,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:55,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:18:55,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:55,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-25 11:18:55,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:55,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:18:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 139 proven. 4 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 11:18:55,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552676635] [2020-09-25 11:18:55,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:55,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:18:55,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671846630] [2020-09-25 11:18:55,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:18:55,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:55,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:18:55,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:18:55,595 INFO L87 Difference]: Start difference. First operand 3448 states and 4351 transitions. Second operand 10 states. [2020-09-25 11:18:59,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:59,111 INFO L93 Difference]: Finished difference Result 6905 states and 8994 transitions. [2020-09-25 11:18:59,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:18:59,111 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 266 [2020-09-25 11:18:59,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:59,136 INFO L225 Difference]: With dead ends: 6905 [2020-09-25 11:18:59,136 INFO L226 Difference]: Without dead ends: 4396 [2020-09-25 11:18:59,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:18:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2020-09-25 11:18:59,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4355. [2020-09-25 11:18:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4355 states. [2020-09-25 11:18:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4355 states to 4355 states and 5431 transitions. [2020-09-25 11:18:59,260 INFO L78 Accepts]: Start accepts. Automaton has 4355 states and 5431 transitions. Word has length 266 [2020-09-25 11:18:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:59,261 INFO L479 AbstractCegarLoop]: Abstraction has 4355 states and 5431 transitions. [2020-09-25 11:18:59,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:18:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4355 states and 5431 transitions. [2020-09-25 11:18:59,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 11:18:59,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:59,269 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:59,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:18:59,270 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:59,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:59,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1537763131, now seen corresponding path program 1 times [2020-09-25 11:18:59,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:59,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037685362] [2020-09-25 11:18:59,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:59,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:00,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:04,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-25 11:19:04,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:19:04,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 11:19:04,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:04,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:04,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:19:04,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:19:04,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 11:19:04,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:04,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:04,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:04,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:04,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:04,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:19:04,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:04,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:04,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking...