/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_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:35:15,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:35:15,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:35:15,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:35:15,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:35:15,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:35:15,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:35:15,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:35:15,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:35:15,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:35:15,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:35:15,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:35:15,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:35:15,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:35:15,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:35:15,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:35:15,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:35:15,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:35:15,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:35:15,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:35:15,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:35:15,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:35:15,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:35:15,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:35:16,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:35:16,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:35:16,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:35:16,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:35:16,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:35:16,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:35:16,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:35:16,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:35:16,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:35:16,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:35:16,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:35:16,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:35:16,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:35:16,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:35:16,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:35:16,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:35:16,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:35:16,034 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 05:35:16,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:35:16,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:35:16,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:35:16,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:35:16,090 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:35:16,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:35:16,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:35:16,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:35:16,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:35:16,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:35:16,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:35:16,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:35:16,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:35:16,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:35:16,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:35:16,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:35:16,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:35:16,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:35:16,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:35:16,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:35:16,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:35:16,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:35:16,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:35:16,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:35:16,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:35:16,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:35:16,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:35:16,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:35:16,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:35:16,096 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 05:35:16,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:35:16,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:35:16,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:35:16,563 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:35:16,564 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:35:16,565 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-25 05:35:16,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0276d85d0/50f76982b5a543ddb462db317ed095a2/FLAG887dad932 [2020-09-25 05:35:17,337 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:35:17,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-25 05:35:17,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0276d85d0/50f76982b5a543ddb462db317ed095a2/FLAG887dad932 [2020-09-25 05:35:17,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0276d85d0/50f76982b5a543ddb462db317ed095a2 [2020-09-25 05:35:17,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:35:17,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:35:17,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:17,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:35:17,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:35:17,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:17" (1/1) ... [2020-09-25 05:35:17,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:17, skipping insertion in model container [2020-09-25 05:35:17,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:17" (1/1) ... [2020-09-25 05:35:17,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:35:17,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:35:18,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:18,105 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:35:18,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:18,342 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:35:18,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18 WrapperNode [2020-09-25 05:35:18,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:18,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:35:18,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:35:18,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:35:18,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:35:18,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:35:18,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:35:18,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:35:18,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (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 05:35:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:35:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:35:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:35:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:35:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:35:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:35:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:35:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:35:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:35:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:35:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:35:19,884 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:35:19,885 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:35:19,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:19 BoogieIcfgContainer [2020-09-25 05:35:19,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:35:19,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:35:19,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:35:19,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:35:19,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:35:17" (1/3) ... [2020-09-25 05:35:19,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:19, skipping insertion in model container [2020-09-25 05:35:19,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (2/3) ... [2020-09-25 05:35:19,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:19, skipping insertion in model container [2020-09-25 05:35:19,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:19" (3/3) ... [2020-09-25 05:35:19,907 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label09.c [2020-09-25 05:35:19,919 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:35:19,931 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:35:19,957 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:35:19,997 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:35:19,997 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:35:19,997 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:35:19,997 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:35:19,998 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:35:19,998 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:35:19,998 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:35:19,998 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:35:20,032 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:35:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 05:35:20,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:20,055 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] [2020-09-25 05:35:20,056 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:20,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:20,064 INFO L82 PathProgramCache]: Analyzing trace with hash -260189822, now seen corresponding path program 1 times [2020-09-25 05:35:20,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:20,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 05:35:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:20,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:21,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:23,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:24,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:24,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:24,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:25,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 05:35:25,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:35:25,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 05:35:25,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:25,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:35:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 05:35:25,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:35:25,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:25,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:25,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 05:35:25,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:25,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:35:25,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:25,879 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 05:35:25,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 05:35:25,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:25,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:35:25,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110413778] [2020-09-25 05:35:25,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:35:25,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:25,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:35:25,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:35:25,921 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:35:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:28,464 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 05:35:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:35:28,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-09-25 05:35:28,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:28,518 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 05:35:28,519 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 05:35:28,533 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 05:35:28,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 05:35:28,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 05:35:28,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 05:35:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 05:35:28,648 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 147 [2020-09-25 05:35:28,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:28,650 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 05:35:28,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:35:28,650 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 05:35:28,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 05:35:28,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:28,658 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-25 05:35:28,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:35:28,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:28,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:28,659 INFO L82 PathProgramCache]: Analyzing trace with hash 345157294, now seen corresponding path program 1 times [2020-09-25 05:35:28,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:28,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947632629] [2020-09-25 05:35:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:28,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:31,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:31,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:32,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:33,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 05:35:33,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:35:33,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 05:35:33,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:33,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:35:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 05:35:33,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:33,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:33,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:33,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:35:33,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:33,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:33,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:33,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:33,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:33,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:33,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:33,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:35:33,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:35:33,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:33,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:33,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:35:33,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:33,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947632629] [2020-09-25 05:35:33,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:33,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:33,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621159012] [2020-09-25 05:35:33,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:33,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:33,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:33,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:33,955 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 05:35:35,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:35,573 INFO L93 Difference]: Finished difference Result 1623 states and 2079 transitions. [2020-09-25 05:35:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:35,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 05:35:35,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:35,587 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 05:35:35,587 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 05:35:35,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:35,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 05:35:35,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 816. [2020-09-25 05:35:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 05:35:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1043 transitions. [2020-09-25 05:35:35,656 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1043 transitions. Word has length 165 [2020-09-25 05:35:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:35,657 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 1043 transitions. [2020-09-25 05:35:35,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1043 transitions. [2020-09-25 05:35:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 05:35:35,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:35,666 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 05:35:35,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:35:35,667 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:35,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:35,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1015227465, now seen corresponding path program 1 times [2020-09-25 05:35:35,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:35,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195171184] [2020-09-25 05:35:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:35,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:36,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:38,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:38,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:38,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:39,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:40,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:40,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:40,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 05:35:40,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:35:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:35:40,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:40,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:35:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 05:35:40,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:40,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:40,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:40,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:40,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:40,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:40,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:35:40,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:40,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:40,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:40,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:40,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:40,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:40,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:35:40,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:40,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:35:40,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:40,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:40,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:40,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:35:40,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:40,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195171184] [2020-09-25 05:35:40,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:40,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:40,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013742795] [2020-09-25 05:35:40,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:40,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:40,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:40,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:40,980 INFO L87 Difference]: Start difference. First operand 816 states and 1043 transitions. Second operand 5 states. [2020-09-25 05:35:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:43,038 INFO L93 Difference]: Finished difference Result 2075 states and 2796 transitions. [2020-09-25 05:35:43,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:43,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 05:35:43,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:43,051 INFO L225 Difference]: With dead ends: 2075 [2020-09-25 05:35:43,052 INFO L226 Difference]: Without dead ends: 1281 [2020-09-25 05:35:43,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-09-25 05:35:43,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1269. [2020-09-25 05:35:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-09-25 05:35:43,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1663 transitions. [2020-09-25 05:35:43,124 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1663 transitions. Word has length 173 [2020-09-25 05:35:43,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:43,134 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1663 transitions. [2020-09-25 05:35:43,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:43,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1663 transitions. [2020-09-25 05:35:43,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 05:35:43,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:43,148 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:35:43,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:35:43,149 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:43,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:43,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1591889424, now seen corresponding path program 1 times [2020-09-25 05:35:43,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:43,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463156049] [2020-09-25 05:35:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:43,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:43,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:48,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 05:35:48,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:35:48,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 05:35:48,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:48,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 05:35:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:35:48,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:48,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:48,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:48,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:48,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:35:48,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:48,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:48,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:48,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:48,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 05:35:48,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:48,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 05:35:48,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:48,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:48,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:48,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:48,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:35:48,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:48,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 05:35:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:48,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:48,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:35:48,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:48,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 05:35:48,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:48,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:35:48,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:35:48,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463156049] [2020-09-25 05:35:48,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:48,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:35:48,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470845603] [2020-09-25 05:35:48,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:35:48,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:48,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:35:48,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:35:48,540 INFO L87 Difference]: Start difference. First operand 1269 states and 1663 transitions. Second operand 7 states. [2020-09-25 05:35:51,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:51,258 INFO L93 Difference]: Finished difference Result 3464 states and 4884 transitions. [2020-09-25 05:35:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:35:51,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 05:35:51,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:51,277 INFO L225 Difference]: With dead ends: 3464 [2020-09-25 05:35:51,277 INFO L226 Difference]: Without dead ends: 2217 [2020-09-25 05:35:51,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:35:51,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2020-09-25 05:35:51,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 1905. [2020-09-25 05:35:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1905 states. [2020-09-25 05:35:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2390 transitions. [2020-09-25 05:35:51,388 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2390 transitions. Word has length 222 [2020-09-25 05:35:51,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:51,389 INFO L479 AbstractCegarLoop]: Abstraction has 1905 states and 2390 transitions. [2020-09-25 05:35:51,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:35:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2390 transitions. [2020-09-25 05:35:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 05:35:51,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:51,400 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:35:51,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:35:51,400 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:51,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:51,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1032028468, now seen corresponding path program 1 times [2020-09-25 05:35:51,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:51,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643340015] [2020-09-25 05:35:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:51,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:51,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:56,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 05:35:56,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:35:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:35:56,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:56,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:56,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:56,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 05:35:56,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:35:56,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:56,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:56,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:56,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:56,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:56,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:35:56,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:56,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:56,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:56,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:56,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:56,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:35:56,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 05:35:56,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:56,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:56,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:35:56,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:56,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:35:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:56,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:56,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:35:56,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:56,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 05:35:56,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:56,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:56,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:56,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:56,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:35:56,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:35:56,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643340015] [2020-09-25 05:35:56,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:56,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:35:56,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989087644] [2020-09-25 05:35:56,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:35:56,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:56,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:35:56,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:35:56,847 INFO L87 Difference]: Start difference. First operand 1905 states and 2390 transitions. Second operand 8 states. [2020-09-25 05:36:00,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:00,151 INFO L93 Difference]: Finished difference Result 4942 states and 6602 transitions. [2020-09-25 05:36:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:36:00,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-09-25 05:36:00,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:00,172 INFO L225 Difference]: With dead ends: 4942 [2020-09-25 05:36:00,172 INFO L226 Difference]: Without dead ends: 3069 [2020-09-25 05:36:00,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:36:00,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2020-09-25 05:36:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2992. [2020-09-25 05:36:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2992 states. [2020-09-25 05:36:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 3844 transitions. [2020-09-25 05:36:00,280 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 3844 transitions. Word has length 225 [2020-09-25 05:36:00,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:00,280 INFO L479 AbstractCegarLoop]: Abstraction has 2992 states and 3844 transitions. [2020-09-25 05:36:00,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:36:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 3844 transitions. [2020-09-25 05:36:00,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 05:36:00,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:00,295 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 05:36:00,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:36:00,296 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:00,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:00,296 INFO L82 PathProgramCache]: Analyzing trace with hash 553016873, now seen corresponding path program 1 times [2020-09-25 05:36:00,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:00,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804819482] [2020-09-25 05:36:00,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:00,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:00,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:00,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:00,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:00,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:02,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:02,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:03,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:03,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:04,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:05,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:05,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 05:36:05,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:36:05,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 05:36:05,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:05,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 05:36:05,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:36:05,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:05,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:05,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:05,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:05,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:05,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:05,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:36:05,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:05,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:05,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:05,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:05,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:05,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:05,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:05,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:36:05,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 05:36:05,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:05,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:05,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:36:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:05,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:05,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:05,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 05:36:05,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 05:36:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:05,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 05:36:05,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:05,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 05:36:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:05,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:05,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:05,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:36:05,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:05,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 05:36:05,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:05,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:05,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:05,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:36:05,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:36:05,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 05:36:05,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804819482] [2020-09-25 05:36:05,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:05,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:36:05,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352434787] [2020-09-25 05:36:05,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:36:05,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:05,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:36:05,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:36:05,825 INFO L87 Difference]: Start difference. First operand 2992 states and 3844 transitions. Second operand 7 states.