/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:42,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:42,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:42,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:42,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:42,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:42,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:42,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:42,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:42,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:42,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:42,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:42,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:42,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:42,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:42,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:42,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:42,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:42,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:42,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:42,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:42,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:42,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:42,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:42,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:42,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:42,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:42,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:42,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:42,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:42,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:42,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:42,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:42,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:42,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:42,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:42,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:42,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:42,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:42,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:42,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:42,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:41:43,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:43,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:43,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:43,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:43,030 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:43,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:43,031 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:43,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:43,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:43,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:43,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:43,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:43,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:43,032 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:43,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:43,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:43,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:43,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:43,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:43,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:43,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:43,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:43,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:43,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:43,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:43,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:43,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:43,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:43,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:43,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:41:43,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:43,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:43,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:43,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:43,521 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:43,522 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-25 14:41:43,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7a17d997/4d43f41f0d80436183d67b49aab83add/FLAG999b6386a [2020-09-25 14:41:44,207 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:44,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label15.c [2020-09-25 14:41:44,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7a17d997/4d43f41f0d80436183d67b49aab83add/FLAG999b6386a [2020-09-25 14:41:44,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7a17d997/4d43f41f0d80436183d67b49aab83add [2020-09-25 14:41:44,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:44,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:44,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:44,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:44,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:44,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:44" (1/1) ... [2020-09-25 14:41:44,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc1b413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:44, skipping insertion in model container [2020-09-25 14:41:44,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:44" (1/1) ... [2020-09-25 14:41:44,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:44,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:45,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:45,028 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:45,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:45,267 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:45,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:45 WrapperNode [2020-09-25 14:41:45,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:45,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:45,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:45,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:45,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:45" (1/1) ... [2020-09-25 14:41:45,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:45" (1/1) ... [2020-09-25 14:41:45,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:45" (1/1) ... [2020-09-25 14:41:45,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:45" (1/1) ... [2020-09-25 14:41:45,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:45" (1/1) ... [2020-09-25 14:41:45,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:45" (1/1) ... [2020-09-25 14:41:45,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:45" (1/1) ... [2020-09-25 14:41:45,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:45,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:45,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:45,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:45,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:45,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:45,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:45,503 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:45,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:45,504 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:45,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:45,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:45,505 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:45,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:45,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:45,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:46,912 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:46,912 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:46,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:46 BoogieIcfgContainer [2020-09-25 14:41:46,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:46,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:46,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:46,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:46,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:44" (1/3) ... [2020-09-25 14:41:46,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ed7552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:46, skipping insertion in model container [2020-09-25 14:41:46,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:45" (2/3) ... [2020-09-25 14:41:46,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ed7552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:46, skipping insertion in model container [2020-09-25 14:41:46,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:46" (3/3) ... [2020-09-25 14:41:46,931 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label15.c [2020-09-25 14:41:46,945 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:46,956 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:46,982 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:47,021 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:47,021 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:47,021 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:47,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:47,022 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:47,022 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:47,022 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:47,022 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:47,057 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:41:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 14:41:47,066 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:47,067 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] [2020-09-25 14:41:47,068 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:47,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:47,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1814812065, now seen corresponding path program 1 times [2020-09-25 14:41:47,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:47,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872194903] [2020-09-25 14:41:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:47,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:47,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:41:47,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:41:47,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-09-25 14:41:47,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:47,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:41:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:41:47,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:41:47,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:47,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:47,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:41:47,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:47,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:41:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:47,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872194903] [2020-09-25 14:41:47,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:47,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:41:47,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289027186] [2020-09-25 14:41:47,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:41:47,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:47,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:41:47,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:41:47,941 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:41:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:49,860 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 14:41:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:49,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 14:41:49,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:49,900 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 14:41:49,901 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 14:41:49,914 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 14:41:49,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 14:41:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 14:41:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 14:41:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 14:41:50,022 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 29 [2020-09-25 14:41:50,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:50,023 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 14:41:50,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:41:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 14:41:50,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 14:41:50,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:50,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:50,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:50,030 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:50,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:50,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1743569131, now seen corresponding path program 1 times [2020-09-25 14:41:50,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:50,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514166912] [2020-09-25 14:41:50,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:50,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:50,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:50,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:51,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:52,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:52,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 14:41:52,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:52,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1924 [2020-09-25 14:41:52,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:52,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:52,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:52,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:52,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:41:52,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:52,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:52,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:52,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:52,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:52,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:41:52,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:52,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:52,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:41:52,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:52,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:52,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:52,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:52,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:41:52,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:52,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 14:41:52,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:52,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:41:52,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:52,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514166912] [2020-09-25 14:41:52,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:52,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:41:52,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314562467] [2020-09-25 14:41:52,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:52,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:52,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:52,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:52,443 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 14:41:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:54,576 INFO L93 Difference]: Finished difference Result 1258 states and 1571 transitions. [2020-09-25 14:41:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:41:54,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-09-25 14:41:54,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:54,581 INFO L225 Difference]: With dead ends: 1258 [2020-09-25 14:41:54,581 INFO L226 Difference]: Without dead ends: 730 [2020-09-25 14:41:54,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:41:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-25 14:41:54,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 699. [2020-09-25 14:41:54,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 14:41:54,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 855 transitions. [2020-09-25 14:41:54,621 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 855 transitions. Word has length 109 [2020-09-25 14:41:54,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:54,621 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 855 transitions. [2020-09-25 14:41:54,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:54,622 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 855 transitions. [2020-09-25 14:41:54,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 14:41:54,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:54,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:54,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:54,627 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:54,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:54,628 INFO L82 PathProgramCache]: Analyzing trace with hash -162546798, now seen corresponding path program 1 times [2020-09-25 14:41:54,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:54,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440524199] [2020-09-25 14:41:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:54,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:55,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:55,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:57,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:57,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 14:41:57,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3161 [2020-09-25 14:41:57,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:57,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:41:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 14:41:57,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:57,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:57,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:57,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:57,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:57,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:57,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:41:57,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:57,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:41:57,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:57,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:57,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:58,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:41:58,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:58,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 14:41:58,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:58,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:58,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:41:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:58,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:41:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:58,248 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:58,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440524199] [2020-09-25 14:41:58,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:58,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:41:58,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514748844] [2020-09-25 14:41:58,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:41:58,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:58,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:41:58,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:58,251 INFO L87 Difference]: Start difference. First operand 699 states and 855 transitions. Second operand 8 states. [2020-09-25 14:42:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:01,195 INFO L93 Difference]: Finished difference Result 1635 states and 2066 transitions. [2020-09-25 14:42:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:01,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-09-25 14:42:01,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:01,202 INFO L225 Difference]: With dead ends: 1635 [2020-09-25 14:42:01,202 INFO L226 Difference]: Without dead ends: 1101 [2020-09-25 14:42:01,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:42:01,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-25 14:42:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1046. [2020-09-25 14:42:01,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-09-25 14:42:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1270 transitions. [2020-09-25 14:42:01,239 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1270 transitions. Word has length 118 [2020-09-25 14:42:01,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:01,240 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1270 transitions. [2020-09-25 14:42:01,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1270 transitions. [2020-09-25 14:42:01,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 14:42:01,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:01,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:42:01,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:01,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:01,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:01,247 INFO L82 PathProgramCache]: Analyzing trace with hash -878375990, now seen corresponding path program 1 times [2020-09-25 14:42:01,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:01,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064864586] [2020-09-25 14:42:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:01,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:01,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:01,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:02,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:02,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 14:42:02,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:42:02,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1328 [2020-09-25 14:42:02,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:02,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:42:02,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:02,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:02,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:02,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:02,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:02,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:02,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:42:02,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:02,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:42:02,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:02,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:02,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:02,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:02,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 14:42:02,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 14:42:02,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:02,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:42:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:02,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064864586] [2020-09-25 14:42:02,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:02,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:42:02,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350218085] [2020-09-25 14:42:02,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:02,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:02,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:02,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:02,972 INFO L87 Difference]: Start difference. First operand 1046 states and 1270 transitions. Second operand 8 states. [2020-09-25 14:42:05,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:05,752 INFO L93 Difference]: Finished difference Result 3060 states and 3984 transitions. [2020-09-25 14:42:05,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:42:05,752 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-09-25 14:42:05,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:05,769 INFO L225 Difference]: With dead ends: 3060 [2020-09-25 14:42:05,769 INFO L226 Difference]: Without dead ends: 2188 [2020-09-25 14:42:05,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:42:05,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2020-09-25 14:42:05,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2140. [2020-09-25 14:42:05,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2140 states. [2020-09-25 14:42:05,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2620 transitions. [2020-09-25 14:42:05,858 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2620 transitions. Word has length 120 [2020-09-25 14:42:05,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:05,859 INFO L479 AbstractCegarLoop]: Abstraction has 2140 states and 2620 transitions. [2020-09-25 14:42:05,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:05,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2620 transitions. [2020-09-25 14:42:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 14:42:05,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:05,868 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:42:05,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:05,869 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:05,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:05,869 INFO L82 PathProgramCache]: Analyzing trace with hash 472241825, now seen corresponding path program 1 times [2020-09-25 14:42:05,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:05,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227101835] [2020-09-25 14:42:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:05,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:07,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:10,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:10,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 14:42:10,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:42:10,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:42:10,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:10,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:42:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:10,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 14:42:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:11,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:11,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:11,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:11,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:11,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:42:11,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:11,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:11,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:11,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:11,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:11,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:11,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:11,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:11,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:11,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:11,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:11,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 14:42:11,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:11,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:11,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:11,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:11,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:42:11,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:11,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:11,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:11,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:11,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:11,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:11,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 14:42:11,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:11,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:11,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 29 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:42:11,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227101835] [2020-09-25 14:42:11,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:11,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:42:11,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460609384] [2020-09-25 14:42:11,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:42:11,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:11,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:42:11,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:42:11,489 INFO L87 Difference]: Start difference. First operand 2140 states and 2620 transitions. Second operand 9 states. [2020-09-25 14:42:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:14,667 INFO L93 Difference]: Finished difference Result 4020 states and 5111 transitions. [2020-09-25 14:42:14,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:42:14,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 197 [2020-09-25 14:42:14,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:14,692 INFO L225 Difference]: With dead ends: 4020 [2020-09-25 14:42:14,692 INFO L226 Difference]: Without dead ends: 2840 [2020-09-25 14:42:14,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:42:14,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2020-09-25 14:42:14,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2640. [2020-09-25 14:42:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2640 states. [2020-09-25 14:42:14,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 3239 transitions. [2020-09-25 14:42:14,830 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 3239 transitions. Word has length 197 [2020-09-25 14:42:14,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:14,831 INFO L479 AbstractCegarLoop]: Abstraction has 2640 states and 3239 transitions. [2020-09-25 14:42:14,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:42:14,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 3239 transitions. [2020-09-25 14:42:14,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 14:42:14,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:14,838 INFO L422 BasicCegarLoop]: trace histogram [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, 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 14:42:14,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:42:14,838 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:14,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:14,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1668861196, now seen corresponding path program 1 times [2020-09-25 14:42:14,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:14,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122925606] [2020-09-25 14:42:14,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:14,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:15,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:15,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:15,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:15,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:17,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:19,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:19,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:19,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 14:42:19,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:42:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:42:19,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:19,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 14:42:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 14:42:19,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:19,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:19,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:19,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:19,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:19,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:19,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:42:19,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:19,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:19,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:19,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:20,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:20,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:20,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 14:42:20,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:20,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:20,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:20,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:20,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:42:20,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:20,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 14:42:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:20,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:20,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:42:20,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:20,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 14:42:20,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:20,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:20,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:20,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 14:42:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:42:20,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122925606] [2020-09-25 14:42:20,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:20,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:42:20,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056680289] [2020-09-25 14:42:20,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:20,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:20,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:20,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:20,341 INFO L87 Difference]: Start difference. First operand 2640 states and 3239 transitions. Second operand 7 states. [2020-09-25 14:42:22,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:22,913 INFO L93 Difference]: Finished difference Result 5785 states and 7370 transitions. [2020-09-25 14:42:22,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:42:22,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-09-25 14:42:22,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:22,929 INFO L225 Difference]: With dead ends: 5785 [2020-09-25 14:42:22,929 INFO L226 Difference]: Without dead ends: 2520 [2020-09-25 14:42:22,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:42:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2020-09-25 14:42:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2446. [2020-09-25 14:42:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2446 states. [2020-09-25 14:42:23,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 2934 transitions. [2020-09-25 14:42:23,014 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 2934 transitions. Word has length 201 [2020-09-25 14:42:23,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:23,014 INFO L479 AbstractCegarLoop]: Abstraction has 2446 states and 2934 transitions. [2020-09-25 14:42:23,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:23,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 2934 transitions. [2020-09-25 14:42:23,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-25 14:42:23,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:23,019 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:42:23,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:42:23,019 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:23,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1682680010, now seen corresponding path program 1 times [2020-09-25 14:42:23,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:23,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701871435] [2020-09-25 14:42:23,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:23,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:24,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-25 14:42:24,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:42:24,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1471 [2020-09-25 14:42:24,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:24,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:24,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:42:24,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 14:42:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:24,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:24,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:24,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:24,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:24,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:42:24,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:24,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:24,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:24,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:24,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:24,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:24,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:24,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 14:42:24,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:24,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:24,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:42:24,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:24,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:24,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:25,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:25,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 14:42:25,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:25,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 14:42:25,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:25,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 14:42:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:42:25,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701871435] [2020-09-25 14:42:25,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:25,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:42:25,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10853021] [2020-09-25 14:42:25,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:42:25,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:25,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:42:25,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:42:25,224 INFO L87 Difference]: Start difference. First operand 2446 states and 2934 transitions. Second operand 7 states. [2020-09-25 14:42:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:27,171 INFO L93 Difference]: Finished difference Result 5042 states and 6164 transitions. [2020-09-25 14:42:27,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:42:27,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-09-25 14:42:27,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:27,185 INFO L225 Difference]: With dead ends: 5042 [2020-09-25 14:42:27,185 INFO L226 Difference]: Without dead ends: 2775 [2020-09-25 14:42:27,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 14:42:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2020-09-25 14:42:27,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2745. [2020-09-25 14:42:27,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2745 states. [2020-09-25 14:42:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 3222 transitions. [2020-09-25 14:42:27,261 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 3222 transitions. Word has length 237 [2020-09-25 14:42:27,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:27,262 INFO L479 AbstractCegarLoop]: Abstraction has 2745 states and 3222 transitions. [2020-09-25 14:42:27,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:42:27,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 3222 transitions. [2020-09-25 14:42:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-09-25 14:42:27,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:27,271 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:42:27,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:42:27,271 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:27,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:27,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1726897106, now seen corresponding path program 1 times [2020-09-25 14:42:27,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:27,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683181931] [2020-09-25 14:42:27,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:27,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:27,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:28,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:29,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking...