/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=0.6 --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/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:48:58,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:48:58,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:48:58,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:48:58,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:48:58,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:48:58,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:48:58,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:48:58,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:48:58,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:48:58,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:48:58,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:48:58,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:48:58,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:48:58,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:48:58,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:48:58,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:48:58,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:48:58,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:48:58,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:48:58,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:48:58,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:48:58,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:48:58,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:48:58,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:48:58,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:48:58,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:48:58,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:48:58,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:48:58,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:48:58,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:48:58,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:48:58,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:48:58,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:48:58,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:48:58,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:48:58,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:48:58,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:48:58,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:48:58,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:48:58,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:48:58,928 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 06:48:58,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:48:58,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:48:58,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:48:58,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:48:58,966 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:48:58,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:48:58,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:48:58,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:48:58,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:48:58,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:48:58,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:48:58,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:48:58,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:48:58,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:48:58,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:48:58,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:48:58,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:48:58,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:48:58,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:48:58,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:48:58,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:48:58,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:48:58,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:48:58,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:48:58,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:48:58,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:48:58,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:48:58,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:48:58,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:48:58,974 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:48:59,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:48:59,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:48:59,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:48:59,470 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:48:59,470 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:48:59,472 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 06:48:59,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/855bf58f3/957def0ca58e47f7823e2bab432a9516/FLAGd9aa4f9ee [2020-09-25 06:49:00,234 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:49:00,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 06:49:00,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/855bf58f3/957def0ca58e47f7823e2bab432a9516/FLAGd9aa4f9ee [2020-09-25 06:49:00,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/855bf58f3/957def0ca58e47f7823e2bab432a9516 [2020-09-25 06:49:00,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:49:00,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:49:00,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:49:00,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:49:00,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:49:00,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:49:00" (1/1) ... [2020-09-25 06:49:00,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a86aac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:00, skipping insertion in model container [2020-09-25 06:49:00,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:49:00" (1/1) ... [2020-09-25 06:49:00,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:49:00,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:49:01,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:49:01,142 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:49:01,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:49:01,430 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:49:01,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:01 WrapperNode [2020-09-25 06:49:01,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:49:01,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:49:01,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:49:01,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:49:01,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:01" (1/1) ... [2020-09-25 06:49:01,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:01" (1/1) ... [2020-09-25 06:49:01,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:01" (1/1) ... [2020-09-25 06:49:01,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:01" (1/1) ... [2020-09-25 06:49:01,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:01" (1/1) ... [2020-09-25 06:49:01,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:01" (1/1) ... [2020-09-25 06:49:01,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:01" (1/1) ... [2020-09-25 06:49:01,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:49:01,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:49:01,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:49:01,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:49:01,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:01" (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 06:49:01,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:49:01,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:49:01,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:49:01,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:49:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:49:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:49:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:49:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:49:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:49:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:49:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:49:03,388 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:49:03,389 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:49:03,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:49:03 BoogieIcfgContainer [2020-09-25 06:49:03,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:49:03,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:49:03,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:49:03,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:49:03,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:49:00" (1/3) ... [2020-09-25 06:49:03,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c5affd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:49:03, skipping insertion in model container [2020-09-25 06:49:03,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:49:01" (2/3) ... [2020-09-25 06:49:03,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c5affd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:49:03, skipping insertion in model container [2020-09-25 06:49:03,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:49:03" (3/3) ... [2020-09-25 06:49:03,421 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-25 06:49:03,434 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:49:03,448 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:49:03,471 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:49:03,509 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:49:03,510 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:49:03,510 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:49:03,511 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:49:03,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:49:03,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:49:03,511 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:49:03,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:49:03,554 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 06:49:03,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 06:49:03,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:03,571 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] [2020-09-25 06:49:03,571 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:03,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:03,578 INFO L82 PathProgramCache]: Analyzing trace with hash -4985686, now seen corresponding path program 1 times [2020-09-25 06:49:03,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:03,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620464125] [2020-09-25 06:49:03,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:03,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:04,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:49:04,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:49:04,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-09-25 06:49:04,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:04,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:04,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:04,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:49:04,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 06:49:04,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:49:04,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:04,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:04,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:04,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:04,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:04,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:49:04,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:04,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:04,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:49:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:49:04,716 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 06:49:04,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620464125] [2020-09-25 06:49:04,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:04,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:49:04,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333440218] [2020-09-25 06:49:04,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:49:04,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:04,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:49:04,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:49:04,751 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 06:49:07,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:07,729 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-25 06:49:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:49:07,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 06:49:07,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:07,760 INFO L225 Difference]: With dead ends: 1656 [2020-09-25 06:49:07,760 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 06:49:07,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 06:49:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 06:49:07,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-25 06:49:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 06:49:07,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-25 06:49:07,900 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 67 [2020-09-25 06:49:07,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:07,901 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-25 06:49:07,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:49:07,901 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-25 06:49:07,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 06:49:07,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:07,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:07,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:49:07,912 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:07,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:07,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1033084141, now seen corresponding path program 1 times [2020-09-25 06:49:07,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:07,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423798611] [2020-09-25 06:49:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:10,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:10,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:12,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:12,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 06:49:12,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:49:12,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 06:49:12,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:12,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:12,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:12,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:49:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 06:49:12,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:13,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:13,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:13,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:13,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:13,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:13,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:49:13,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:13,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:13,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:49:13,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:13,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:13,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:13,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:13,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:49:13,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:13,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 06:49:13,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:13,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:13,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:13,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 06:49:13,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:13,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423798611] [2020-09-25 06:49:13,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:13,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:13,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776132275] [2020-09-25 06:49:13,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:13,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:13,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:13,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:13,332 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 7 states. [2020-09-25 06:49:16,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:16,514 INFO L93 Difference]: Finished difference Result 2051 states and 2571 transitions. [2020-09-25 06:49:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:49:16,514 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-25 06:49:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:16,522 INFO L225 Difference]: With dead ends: 2051 [2020-09-25 06:49:16,522 INFO L226 Difference]: Without dead ends: 1260 [2020-09-25 06:49:16,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:49:16,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-09-25 06:49:16,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1196. [2020-09-25 06:49:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-25 06:49:16,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1457 transitions. [2020-09-25 06:49:16,564 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1457 transitions. Word has length 146 [2020-09-25 06:49:16,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:16,565 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1457 transitions. [2020-09-25 06:49:16,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1457 transitions. [2020-09-25 06:49:16,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 06:49:16,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:16,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:49:16,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:49:16,569 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:16,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:16,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1169132927, now seen corresponding path program 1 times [2020-09-25 06:49:16,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:16,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172852775] [2020-09-25 06:49:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:16,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:16,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:16,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:18,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:20,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:20,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 06:49:20,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:49:20,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3886 [2020-09-25 06:49:20,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:20,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:20,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:49:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:49:20,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 06:49:20,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:20,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:20,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:20,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:20,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:20,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:49:20,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:20,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:20,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:49:20,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:20,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:20,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:20,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 06:49:20,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:20,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 06:49:20,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:20,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:20,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:49:20,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:49:20,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172852775] [2020-09-25 06:49:20,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:49:20,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:49:20,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800625063] [2020-09-25 06:49:20,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:20,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:20,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:20,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:20,821 INFO L87 Difference]: Start difference. First operand 1196 states and 1457 transitions. Second operand 7 states. [2020-09-25 06:49:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:24,000 INFO L93 Difference]: Finished difference Result 2855 states and 3504 transitions. [2020-09-25 06:49:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:49:24,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-09-25 06:49:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:24,027 INFO L225 Difference]: With dead ends: 2855 [2020-09-25 06:49:24,027 INFO L226 Difference]: Without dead ends: 1674 [2020-09-25 06:49:24,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:49:24,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2020-09-25 06:49:24,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1638. [2020-09-25 06:49:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1638 states. [2020-09-25 06:49:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1944 transitions. [2020-09-25 06:49:24,119 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1944 transitions. Word has length 149 [2020-09-25 06:49:24,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:24,120 INFO L479 AbstractCegarLoop]: Abstraction has 1638 states and 1944 transitions. [2020-09-25 06:49:24,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1944 transitions. [2020-09-25 06:49:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 06:49:24,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:24,133 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:49:24,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:49:24,134 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:24,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1277460696, now seen corresponding path program 1 times [2020-09-25 06:49:24,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:24,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363924988] [2020-09-25 06:49:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:24,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:24,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:25,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:26,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:27,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 06:49:29,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:49:29,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 06:49:29,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:29,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 06:49:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 06:49:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:29,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:29,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:29,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:49:29,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:29,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:29,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:49:29,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:29,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 06:49:29,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:29,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:29,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 06:49:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:49:29,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 06:49:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:29,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:29,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:29,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 06:49:29,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 06:49:29,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:29,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:29,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 06:49:29,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:30,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363924988] [2020-09-25 06:49:30,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:30,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:49:30,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28634414] [2020-09-25 06:49:30,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:30,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:30,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:30,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:30,147 INFO L87 Difference]: Start difference. First operand 1638 states and 1944 transitions. Second operand 7 states. [2020-09-25 06:49:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:33,965 INFO L93 Difference]: Finished difference Result 3747 states and 4622 transitions. [2020-09-25 06:49:33,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:49:33,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-09-25 06:49:33,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:33,983 INFO L225 Difference]: With dead ends: 3747 [2020-09-25 06:49:33,983 INFO L226 Difference]: Without dead ends: 2313 [2020-09-25 06:49:33,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:49:33,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2020-09-25 06:49:34,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2283. [2020-09-25 06:49:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2283 states. [2020-09-25 06:49:34,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 2678 transitions. [2020-09-25 06:49:34,056 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 2678 transitions. Word has length 254 [2020-09-25 06:49:34,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:34,057 INFO L479 AbstractCegarLoop]: Abstraction has 2283 states and 2678 transitions. [2020-09-25 06:49:34,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 2678 transitions. [2020-09-25 06:49:34,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-25 06:49:34,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:34,063 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:49:34,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:49:34,064 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:34,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:34,065 INFO L82 PathProgramCache]: Analyzing trace with hash -404945933, now seen corresponding path program 1 times [2020-09-25 06:49:34,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:34,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557899995] [2020-09-25 06:49:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:34,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:34,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:37,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:39,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:39,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-09-25 06:49:39,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:49:39,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 06:49:39,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:39,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:39,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:39,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-25 06:49:39,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 06:49:39,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:49:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:49:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:39,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:39,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:39,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:49:39,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:49:39,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:39,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:39,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:49:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:49:39,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:39,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:49:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:39,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:39,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:39,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:49:39,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:39,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 06:49:39,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:39,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:39,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:49:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:49:39,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 06:49:39,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:49:39,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 06:49:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:39,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:39,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:49:39,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 06:49:39,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:49:39,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-25 06:49:39,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:49:39,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:49:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:49:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:49:39,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 06:49:39,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:49:39,867 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:49:39,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557899995] [2020-09-25 06:49:39,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:49:39,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:49:39,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914825298] [2020-09-25 06:49:39,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:49:39,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:49:39,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:49:39,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:49:39,870 INFO L87 Difference]: Start difference. First operand 2283 states and 2678 transitions. Second operand 7 states. [2020-09-25 06:49:44,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:49:44,327 INFO L93 Difference]: Finished difference Result 5745 states and 6824 transitions. [2020-09-25 06:49:44,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:49:44,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-09-25 06:49:44,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:49:44,349 INFO L225 Difference]: With dead ends: 5745 [2020-09-25 06:49:44,349 INFO L226 Difference]: Without dead ends: 2946 [2020-09-25 06:49:44,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:49:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-09-25 06:49:44,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2733. [2020-09-25 06:49:44,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2733 states. [2020-09-25 06:49:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 3092 transitions. [2020-09-25 06:49:44,422 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 3092 transitions. Word has length 303 [2020-09-25 06:49:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:49:44,423 INFO L479 AbstractCegarLoop]: Abstraction has 2733 states and 3092 transitions. [2020-09-25 06:49:44,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:49:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 3092 transitions. [2020-09-25 06:49:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-09-25 06:49:44,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:49:44,428 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:49:44,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:49:44,429 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:49:44,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:49:44,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1691491011, now seen corresponding path program 1 times [2020-09-25 06:49:44,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:49:44,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722062454] [2020-09-25 06:49:44,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:49:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:49:44,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:44,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:44,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:45,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:49:46,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking...