/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:57:08,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:08,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:08,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:08,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:08,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:08,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:08,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:08,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:08,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:08,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:08,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:08,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:08,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:08,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:08,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:08,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:08,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:08,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:08,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:08,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:08,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:08,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:08,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:08,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:08,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:08,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:08,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:08,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:08,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:08,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:08,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:08,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:08,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:08,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:08,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:08,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:08,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:08,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:08,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:08,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:08,926 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 07:57:08,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:08,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:08,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:08,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:08,981 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:08,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:08,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:08,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:08,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:08,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:08,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:08,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:08,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:08,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:08,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:08,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:08,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:08,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:08,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:08,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:08,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:08,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:08,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:08,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:08,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:08,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:08,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:08,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:08,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:08,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:57:09,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:09,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:09,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:09,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:09,462 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:09,463 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 07:57:09,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aefea2b70/890d106cf8d040babee24cf2c008d03d/FLAGfe7d883c7 [2020-09-25 07:57:10,138 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:57:10,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-25 07:57:10,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aefea2b70/890d106cf8d040babee24cf2c008d03d/FLAGfe7d883c7 [2020-09-25 07:57:10,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aefea2b70/890d106cf8d040babee24cf2c008d03d [2020-09-25 07:57:10,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:57:10,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:57:10,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:10,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:57:10,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:57:10,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:10" (1/1) ... [2020-09-25 07:57:10,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:10, skipping insertion in model container [2020-09-25 07:57:10,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:10" (1/1) ... [2020-09-25 07:57:10,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:57:10,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:57:10,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:10,953 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:57:11,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:11,193 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:57:11,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:11 WrapperNode [2020-09-25 07:57:11,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:11,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:57:11,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:57:11,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:57:11,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:11" (1/1) ... [2020-09-25 07:57:11,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:11" (1/1) ... [2020-09-25 07:57:11,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:11" (1/1) ... [2020-09-25 07:57:11,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:11" (1/1) ... [2020-09-25 07:57:11,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:11" (1/1) ... [2020-09-25 07:57:11,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:11" (1/1) ... [2020-09-25 07:57:11,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:11" (1/1) ... [2020-09-25 07:57:11,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:57:11,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:57:11,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:57:11,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:57:11,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:11" (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 07:57:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:57:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:57:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:57:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:57:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:57:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:57:11,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:57:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:57:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:57:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:57:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:57:12,927 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:57:12,927 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:57:12,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:12 BoogieIcfgContainer [2020-09-25 07:57:12,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:57:12,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:57:12,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:57:12,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:57:12,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:57:10" (1/3) ... [2020-09-25 07:57:12,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a715b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:12, skipping insertion in model container [2020-09-25 07:57:12,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:11" (2/3) ... [2020-09-25 07:57:12,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a715b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:12, skipping insertion in model container [2020-09-25 07:57:12,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:12" (3/3) ... [2020-09-25 07:57:12,947 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-25 07:57:12,960 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:57:12,972 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:57:12,996 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:57:13,031 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:57:13,031 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:57:13,031 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:57:13,031 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:57:13,032 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:57:13,032 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:57:13,032 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:57:13,032 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:57:13,062 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:57:13,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 07:57:13,075 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:13,076 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] [2020-09-25 07:57:13,077 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:13,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:13,085 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-25 07:57:13,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:13,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484036615] [2020-09-25 07:57:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:13,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:13,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:14,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:14,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:14,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-25 07:57:14,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:14,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:57:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 07:57:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:57:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:14,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:14,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:14,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:14,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:14,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:57:14,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:14,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:14,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:14,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:57:14,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:14,616 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 07:57:14,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484036615] [2020-09-25 07:57:14,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:14,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:57:14,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897400775] [2020-09-25 07:57:14,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:57:14,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:14,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:57:14,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:57:14,652 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:57:16,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:16,708 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 07:57:16,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:57:16,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-25 07:57:16,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:16,733 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 07:57:16,733 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 07:57:16,745 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 07:57:16,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 07:57:16,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 07:57:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 07:57:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 07:57:16,846 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-25 07:57:16,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:16,847 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 07:57:16,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:57:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 07:57:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 07:57:16,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:16,857 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:16,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:16,858 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:16,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:16,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-25 07:57:16,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:16,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207295053] [2020-09-25 07:57:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:17,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:17,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:19,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 07:57:19,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:57:19,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2319 [2020-09-25 07:57:19,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:19,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:19,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:57:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:19,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:19,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:19,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:19,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:19,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:19,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:57:19,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:19,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:57:19,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:19,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:19,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:19,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:19,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 07:57:19,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:19,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 07:57:19,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:19,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:19,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:19,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207295053] [2020-09-25 07:57:19,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:19,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:19,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489754639] [2020-09-25 07:57:19,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:19,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:19,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:19,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:19,618 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 07:57:22,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:22,034 INFO L93 Difference]: Finished difference Result 1503 states and 1930 transitions. [2020-09-25 07:57:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:57:22,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-25 07:57:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:22,043 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 07:57:22,043 INFO L226 Difference]: Without dead ends: 975 [2020-09-25 07:57:22,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:22,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-09-25 07:57:22,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 892. [2020-09-25 07:57:22,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-09-25 07:57:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1129 transitions. [2020-09-25 07:57:22,135 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1129 transitions. Word has length 156 [2020-09-25 07:57:22,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:22,136 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1129 transitions. [2020-09-25 07:57:22,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:22,136 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1129 transitions. [2020-09-25 07:57:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 07:57:22,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:22,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:22,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:57:22,143 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:22,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:22,144 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-25 07:57:22,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:22,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226840890] [2020-09-25 07:57:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:22,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:22,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:23,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:25,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:27,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 07:57:27,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:57:27,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:27,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 07:57:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:57:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-25 07:57:27,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:27,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:27,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:27,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:27,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:57:27,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:27,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:57:27,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:27,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:27,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:27,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:27,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:27,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 07:57:27,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:27,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:57:27,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:27,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226840890] [2020-09-25 07:57:27,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:27,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:57:27,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931384645] [2020-09-25 07:57:27,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:27,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:27,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:27,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:27,594 INFO L87 Difference]: Start difference. First operand 892 states and 1129 transitions. Second operand 8 states. [2020-09-25 07:57:30,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:30,893 INFO L93 Difference]: Finished difference Result 2693 states and 3586 transitions. [2020-09-25 07:57:30,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:57:30,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 07:57:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:30,913 INFO L225 Difference]: With dead ends: 2693 [2020-09-25 07:57:30,914 INFO L226 Difference]: Without dead ends: 1816 [2020-09-25 07:57:30,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:57:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2020-09-25 07:57:31,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1714. [2020-09-25 07:57:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1714 states. [2020-09-25 07:57:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2249 transitions. [2020-09-25 07:57:31,022 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2249 transitions. Word has length 165 [2020-09-25 07:57:31,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:31,028 INFO L479 AbstractCegarLoop]: Abstraction has 1714 states and 2249 transitions. [2020-09-25 07:57:31,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:57:31,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2249 transitions. [2020-09-25 07:57:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 07:57:31,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:31,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:31,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:57:31,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:31,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:31,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1256012571, now seen corresponding path program 1 times [2020-09-25 07:57:31,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:31,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794148835] [2020-09-25 07:57:31,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:31,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:34,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:34,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 07:57:34,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:57:34,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3124 [2020-09-25 07:57:34,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:34,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:57:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:34,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:34,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:34,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:34,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:34,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:34,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:57:34,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:34,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:34,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:34,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:34,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:34,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:34,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:34,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:34,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:57:34,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:34,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 07:57:34,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:34,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:34,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:34,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:34,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:34,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:34,599 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:34,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794148835] [2020-09-25 07:57:34,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:34,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:34,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473186689] [2020-09-25 07:57:34,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:34,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:34,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:34,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:34,603 INFO L87 Difference]: Start difference. First operand 1714 states and 2249 transitions. Second operand 7 states. [2020-09-25 07:57:36,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:36,940 INFO L93 Difference]: Finished difference Result 4301 states and 5981 transitions. [2020-09-25 07:57:36,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:57:36,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-09-25 07:57:36,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:36,969 INFO L225 Difference]: With dead ends: 4301 [2020-09-25 07:57:36,969 INFO L226 Difference]: Without dead ends: 2752 [2020-09-25 07:57:36,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:36,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2020-09-25 07:57:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2666. [2020-09-25 07:57:37,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2666 states. [2020-09-25 07:57:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3373 transitions. [2020-09-25 07:57:37,111 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3373 transitions. Word has length 167 [2020-09-25 07:57:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:37,112 INFO L479 AbstractCegarLoop]: Abstraction has 2666 states and 3373 transitions. [2020-09-25 07:57:37,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:37,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3373 transitions. [2020-09-25 07:57:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 07:57:37,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:37,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:37,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:57:37,120 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:37,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:37,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1504222835, now seen corresponding path program 1 times [2020-09-25 07:57:37,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:37,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991563106] [2020-09-25 07:57:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:37,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:37,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:37,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:39,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:40,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:42,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:42,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 07:57:42,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:57:42,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 07:57:42,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:42,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:42,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:42,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 07:57:42,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:42,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:42,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:42,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:42,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:42,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:42,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:57:42,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:42,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:42,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:42,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:42,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:42,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:42,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:42,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:42,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:42,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 07:57:42,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:42,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:57:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:42,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:57:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:42,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:42,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:42,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:42,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:42,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 07:57:42,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:42,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:42,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:57:42,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:57:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:57:42,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991563106] [2020-09-25 07:57:42,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:42,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:57:42,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809638492] [2020-09-25 07:57:42,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:57:42,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:42,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:57:42,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:42,867 INFO L87 Difference]: Start difference. First operand 2666 states and 3373 transitions. Second operand 8 states. [2020-09-25 07:57:46,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:46,419 INFO L93 Difference]: Finished difference Result 7194 states and 10304 transitions. [2020-09-25 07:57:46,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:57:46,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2020-09-25 07:57:46,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:46,454 INFO L225 Difference]: With dead ends: 7194 [2020-09-25 07:57:46,455 INFO L226 Difference]: Without dead ends: 4693 [2020-09-25 07:57:46,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:57:46,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2020-09-25 07:57:46,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 4233. [2020-09-25 07:57:46,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4233 states. [2020-09-25 07:57:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4233 states to 4233 states and 5574 transitions. [2020-09-25 07:57:46,640 INFO L78 Accepts]: Start accepts. Automaton has 4233 states and 5574 transitions. Word has length 244 [2020-09-25 07:57:46,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:46,641 INFO L479 AbstractCegarLoop]: Abstraction has 4233 states and 5574 transitions. [2020-09-25 07:57:46,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:57:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4233 states and 5574 transitions. [2020-09-25 07:57:46,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 07:57:46,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:46,650 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:46,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:57:46,650 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:46,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:46,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1938914842, now seen corresponding path program 1 times [2020-09-25 07:57:46,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:46,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396823807] [2020-09-25 07:57:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:46,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:46,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:46,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:47,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:47,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:48,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:51,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:51,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 07:57:51,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:57:51,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 07:57:51,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:51,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:57:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:57:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 07:57:51,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:51,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:51,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:51,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:51,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:51,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:57:51,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:51,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:51,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:51,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:51,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:51,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:52,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:52,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:52,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 07:57:52,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:52,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:52,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:57:52,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:52,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:57:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:52,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:52,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:52,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:52,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-25 07:57:52,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:52,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:52,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:52,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:52,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:52,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 128 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 07:57:52,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396823807] [2020-09-25 07:57:52,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:52,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:57:52,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233663332] [2020-09-25 07:57:52,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:57:52,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:52,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:57:52,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:57:52,700 INFO L87 Difference]: Start difference. First operand 4233 states and 5574 transitions. Second operand 9 states.