/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=0.4 --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/Problem02_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:36:34,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:36:34,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:36:34,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:36:34,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:36:34,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:36:34,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:36:34,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:36:34,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:36:34,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:36:34,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:36:34,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:36:34,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:36:34,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:36:34,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:36:34,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:36:34,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:36:34,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:36:34,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:36:34,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:36:34,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:36:34,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:36:34,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:36:34,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:36:34,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:36:34,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:36:34,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:36:34,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:36:34,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:36:34,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:36:34,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:36:34,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:36:34,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:36:34,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:36:34,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:36:34,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:36:34,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:36:34,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:36:34,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:36:34,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:36:34,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:36:34,961 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 05:36:34,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:36:34,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:36:34,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:36:34,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:36:34,991 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:36:34,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:36:34,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:36:34,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:36:34,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:36:34,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:36:34,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:36:34,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:36:34,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:36:34,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:36:34,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:36:34,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:36:34,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:36:34,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:36:34,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:36:34,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:36:34,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:36:34,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:36:34,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:36:34,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:36:34,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:36:34,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:36:34,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:36:34,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:36:34,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:36:34,996 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:36:35,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:36:35,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:36:35,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:36:35,496 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:36:35,497 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:36:35,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 05:36:35,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd2e0ae21/ae7be97bbc61496cb8e9022370e151b2/FLAGc4e9dbb2d [2020-09-25 05:36:36,249 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:36:36,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label36.c [2020-09-25 05:36:36,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd2e0ae21/ae7be97bbc61496cb8e9022370e151b2/FLAGc4e9dbb2d [2020-09-25 05:36:36,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd2e0ae21/ae7be97bbc61496cb8e9022370e151b2 [2020-09-25 05:36:36,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:36:36,496 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:36:36,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:36,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:36:36,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:36:36,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:36" (1/1) ... [2020-09-25 05:36:36,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:36, skipping insertion in model container [2020-09-25 05:36:36,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:36" (1/1) ... [2020-09-25 05:36:36,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:36:36,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:36:37,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:37,087 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:36:37,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:37,326 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:36:37,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:37 WrapperNode [2020-09-25 05:36:37,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:37,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:36:37,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:36:37,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:36:37,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:37" (1/1) ... [2020-09-25 05:36:37,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:37" (1/1) ... [2020-09-25 05:36:37,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:37" (1/1) ... [2020-09-25 05:36:37,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:37" (1/1) ... [2020-09-25 05:36:37,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:37" (1/1) ... [2020-09-25 05:36:37,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:37" (1/1) ... [2020-09-25 05:36:37,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:37" (1/1) ... [2020-09-25 05:36:37,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:36:37,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:36:37,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:36:37,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:36:37,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:37" (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 05:36:37,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:36:37,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:36:37,515 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:36:37,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:36:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:36:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:36:37,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:36:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:36:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:36:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:36:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:36:38,854 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:36:38,855 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:36:38,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:38 BoogieIcfgContainer [2020-09-25 05:36:38,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:36:38,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:36:38,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:36:38,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:36:38,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:36:36" (1/3) ... [2020-09-25 05:36:38,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:38, skipping insertion in model container [2020-09-25 05:36:38,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:37" (2/3) ... [2020-09-25 05:36:38,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:38, skipping insertion in model container [2020-09-25 05:36:38,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:38" (3/3) ... [2020-09-25 05:36:38,887 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2020-09-25 05:36:38,901 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:36:38,916 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:36:38,939 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:36:38,983 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:36:38,983 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:36:38,983 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:36:38,983 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:36:38,983 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:36:38,984 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:36:38,984 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:36:38,984 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:36:39,018 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:36:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 05:36:39,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:39,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:39,049 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:39,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:39,056 INFO L82 PathProgramCache]: Analyzing trace with hash -404902623, now seen corresponding path program 1 times [2020-09-25 05:36:39,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:39,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803637987] [2020-09-25 05:36:39,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:39,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:39,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:40,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:40,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:43,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:44,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:44,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 05:36:44,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:36:44,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:36:44,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:44,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:44,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:36:44,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:36:44,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 05:36:44,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:36:44,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:44,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:44,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:44,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:44,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:44,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 05:36:44,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:44,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:44,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:44,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:36:44,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:44,742 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 05:36:44,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803637987] [2020-09-25 05:36:44,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:36:44,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:36:44,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235441755] [2020-09-25 05:36:44,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:36:44,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:44,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:36:44,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:36:44,776 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:36:46,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:46,988 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 05:36:46,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:36:46,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-09-25 05:36:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:47,029 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 05:36:47,030 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 05:36:47,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:47,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 05:36:47,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 05:36:47,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 05:36:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 05:36:47,145 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 158 [2020-09-25 05:36:47,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:47,147 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 05:36:47,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:36:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 05:36:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 05:36:47,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:47,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:47,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:36:47,159 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:47,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:47,159 INFO L82 PathProgramCache]: Analyzing trace with hash 856620700, now seen corresponding path program 1 times [2020-09-25 05:36:47,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:47,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744101692] [2020-09-25 05:36:47,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:47,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:47,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:47,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:47,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:52,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:52,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 05:36:52,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:36:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 05:36:52,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:52,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:36:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:36:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 05:36:52,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:36:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:52,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:52,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:52,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:52,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:52,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:36:52,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:52,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:36:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:52,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:52,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:36:52,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:52,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 05:36:52,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:52,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:52,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:36:52,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:36:52,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:36:52,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744101692] [2020-09-25 05:36:52,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:36:52,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:36:52,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160218916] [2020-09-25 05:36:52,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:36:52,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:52,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:36:52,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:36:52,528 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 7 states. [2020-09-25 05:36:54,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:54,900 INFO L93 Difference]: Finished difference Result 1717 states and 2178 transitions. [2020-09-25 05:36:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:36:54,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-09-25 05:36:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:54,911 INFO L225 Difference]: With dead ends: 1717 [2020-09-25 05:36:54,911 INFO L226 Difference]: Without dead ends: 1124 [2020-09-25 05:36:54,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:36:54,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2020-09-25 05:36:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 970. [2020-09-25 05:36:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-09-25 05:36:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1224 transitions. [2020-09-25 05:36:55,000 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1224 transitions. Word has length 192 [2020-09-25 05:36:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:55,003 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1224 transitions. [2020-09-25 05:36:55,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:36:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1224 transitions. [2020-09-25 05:36:55,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 05:36:55,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:55,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:55,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:36:55,012 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:55,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:55,012 INFO L82 PathProgramCache]: Analyzing trace with hash 564185116, now seen corresponding path program 1 times [2020-09-25 05:36:55,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:55,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16100941] [2020-09-25 05:36:55,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:55,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:55,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:55,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:56,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:58,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:00,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:00,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 05:37:00,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:37:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 05:37:00,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:00,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:37:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 05:37:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:00,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:00,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:00,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:00,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:00,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:00,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:37:00,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:00,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:37:00,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:00,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:00,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:00,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 05:37:00,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:00,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 05:37:00,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:00,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 05:37:00,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:00,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16100941] [2020-09-25 05:37:00,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:00,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:37:00,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77289755] [2020-09-25 05:37:00,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:00,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:00,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:00,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:00,377 INFO L87 Difference]: Start difference. First operand 970 states and 1224 transitions. Second operand 7 states. [2020-09-25 05:37:03,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:03,209 INFO L93 Difference]: Finished difference Result 2814 states and 3746 transitions. [2020-09-25 05:37:03,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:37:03,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 05:37:03,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:03,223 INFO L225 Difference]: With dead ends: 2814 [2020-09-25 05:37:03,224 INFO L226 Difference]: Without dead ends: 1866 [2020-09-25 05:37:03,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:37:03,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2020-09-25 05:37:03,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1745. [2020-09-25 05:37:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1745 states. [2020-09-25 05:37:03,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2231 transitions. [2020-09-25 05:37:03,323 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2231 transitions. Word has length 193 [2020-09-25 05:37:03,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:03,324 INFO L479 AbstractCegarLoop]: Abstraction has 1745 states and 2231 transitions. [2020-09-25 05:37:03,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:03,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2231 transitions. [2020-09-25 05:37:03,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 05:37:03,337 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:03,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:03,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:37:03,338 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:03,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:03,339 INFO L82 PathProgramCache]: Analyzing trace with hash 257301984, now seen corresponding path program 1 times [2020-09-25 05:37:03,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:03,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633935735] [2020-09-25 05:37:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:03,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:03,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:03,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:03,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:05,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:08,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 05:37:08,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:08,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:37:08,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:08,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:37:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 05:37:08,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 05:37:08,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:08,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:08,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:08,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:08,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:08,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:08,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:08,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:08,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:08,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:37:08,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:08,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 05:37:08,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:08,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:08,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:08,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:08,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:37:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:08,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633935735] [2020-09-25 05:37:08,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:08,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:37:08,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160334484] [2020-09-25 05:37:08,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:37:08,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:08,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:37:08,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:37:08,816 INFO L87 Difference]: Start difference. First operand 1745 states and 2231 transitions. Second operand 8 states. [2020-09-25 05:37:13,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:13,028 INFO L93 Difference]: Finished difference Result 5622 states and 7692 transitions. [2020-09-25 05:37:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:37:13,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2020-09-25 05:37:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:13,053 INFO L225 Difference]: With dead ends: 5622 [2020-09-25 05:37:13,054 INFO L226 Difference]: Without dead ends: 3687 [2020-09-25 05:37:13,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:37:13,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2020-09-25 05:37:13,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3613. [2020-09-25 05:37:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3613 states. [2020-09-25 05:37:13,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 4488 transitions. [2020-09-25 05:37:13,183 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 4488 transitions. Word has length 196 [2020-09-25 05:37:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:13,185 INFO L479 AbstractCegarLoop]: Abstraction has 3613 states and 4488 transitions. [2020-09-25 05:37:13,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:37:13,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 4488 transitions. [2020-09-25 05:37:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 05:37:13,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:13,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:13,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:37:13,202 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:13,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:13,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1253467920, now seen corresponding path program 1 times [2020-09-25 05:37:13,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:13,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124952889] [2020-09-25 05:37:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:13,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:13,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:13,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:14,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:14,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 05:37:18,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:37:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 05:37:18,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:18,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:37:18,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:37:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:18,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:18,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:18,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:18,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:18,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:37:18,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:18,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:18,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:18,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:18,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:18,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:37:18,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:18,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:18,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:37:18,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:18,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:37:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:18,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:18,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:37:18,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 05:37:18,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:18,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:18,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:18,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:37:18,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:37:18,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124952889] [2020-09-25 05:37:18,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:18,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:37:18,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867432132] [2020-09-25 05:37:18,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:37:18,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:18,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:37:18,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:37:18,634 INFO L87 Difference]: Start difference. First operand 3613 states and 4488 transitions. Second operand 8 states. [2020-09-25 05:37:21,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:21,243 INFO L93 Difference]: Finished difference Result 10157 states and 13217 transitions. [2020-09-25 05:37:21,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:37:21,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-09-25 05:37:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:21,281 INFO L225 Difference]: With dead ends: 10157 [2020-09-25 05:37:21,281 INFO L226 Difference]: Without dead ends: 6566 [2020-09-25 05:37:21,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:37:21,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6566 states. [2020-09-25 05:37:21,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6566 to 6528. [2020-09-25 05:37:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6528 states. [2020-09-25 05:37:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6528 states to 6528 states and 8226 transitions. [2020-09-25 05:37:21,478 INFO L78 Accepts]: Start accepts. Automaton has 6528 states and 8226 transitions. Word has length 210 [2020-09-25 05:37:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:21,478 INFO L479 AbstractCegarLoop]: Abstraction has 6528 states and 8226 transitions. [2020-09-25 05:37:21,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:37:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 6528 states and 8226 transitions. [2020-09-25 05:37:21,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-09-25 05:37:21,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:21,503 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:21,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:37:21,504 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:21,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:21,504 INFO L82 PathProgramCache]: Analyzing trace with hash -424052664, now seen corresponding path program 1 times [2020-09-25 05:37:21,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:21,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256561914] [2020-09-25 05:37:21,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:21,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:21,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:21,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:21,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:22,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:23,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:23,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:24,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking...