/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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:35:50,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:35:50,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:35:50,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:35:50,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:35:50,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:35:50,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:35:50,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:35:50,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:35:50,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:35:51,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:35:51,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:35:51,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:35:51,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:35:51,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:35:51,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:35:51,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:35:51,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:35:51,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:35:51,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:35:51,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:35:51,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:35:51,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:35:51,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:35:51,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:35:51,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:35:51,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:35:51,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:35:51,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:35:51,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:35:51,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:35:51,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:35:51,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:35:51,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:35:51,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:35:51,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:35:51,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:35:51,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:35:51,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:35:51,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:35:51,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:35:51,034 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 05:35:51,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:35:51,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:35:51,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:35:51,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:35:51,079 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:35:51,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:35:51,080 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:35:51,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:35:51,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:35:51,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:35:51,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:35:51,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:35:51,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:35:51,083 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:35:51,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:35:51,084 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:35:51,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:35:51,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:35:51,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:35:51,085 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:35:51,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:35:51,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:35:51,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:35:51,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:35:51,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:35:51,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:35:51,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:35:51,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:35:51,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:35:51,088 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 05:35:51,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:35:51,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:35:51,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:35:51,613 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:35:51,613 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:35:51,614 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label17.c [2020-09-25 05:35:51,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a06d4f083/1afb4692c7f24fd1b1b455e09f596a67/FLAGd882e9112 [2020-09-25 05:35:52,370 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:35:52,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label17.c [2020-09-25 05:35:52,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a06d4f083/1afb4692c7f24fd1b1b455e09f596a67/FLAGd882e9112 [2020-09-25 05:35:52,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a06d4f083/1afb4692c7f24fd1b1b455e09f596a67 [2020-09-25 05:35:52,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:35:52,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:35:52,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:52,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:35:52,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:35:52,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:52" (1/1) ... [2020-09-25 05:35:52,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2915233c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:52, skipping insertion in model container [2020-09-25 05:35:52,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:52" (1/1) ... [2020-09-25 05:35:52,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:35:52,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:35:53,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:53,286 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:35:53,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:53,478 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:35:53,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:53 WrapperNode [2020-09-25 05:35:53,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:53,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:35:53,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:35:53,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:35:53,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:53" (1/1) ... [2020-09-25 05:35:53,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:53" (1/1) ... [2020-09-25 05:35:53,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:53" (1/1) ... [2020-09-25 05:35:53,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:53" (1/1) ... [2020-09-25 05:35:53,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:53" (1/1) ... [2020-09-25 05:35:53,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:53" (1/1) ... [2020-09-25 05:35:53,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:53" (1/1) ... [2020-09-25 05:35:53,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:35:53,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:35:53,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:35:53,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:35:53,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:53" (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 05:35:53,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:35:53,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:35:53,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:35:53,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:35:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:35:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:35:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:35:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:35:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:35:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:35:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:35:55,524 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:35:55,524 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:35:55,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:55 BoogieIcfgContainer [2020-09-25 05:35:55,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:35:55,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:35:55,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:35:55,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:35:55,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:35:52" (1/3) ... [2020-09-25 05:35:55,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50579983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:55, skipping insertion in model container [2020-09-25 05:35:55,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:53" (2/3) ... [2020-09-25 05:35:55,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50579983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:55, skipping insertion in model container [2020-09-25 05:35:55,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:55" (3/3) ... [2020-09-25 05:35:55,545 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label17.c [2020-09-25 05:35:55,556 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:35:55,568 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:35:55,590 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:35:55,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:35:55,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:35:55,625 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:35:55,626 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:35:55,629 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:35:55,629 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:35:55,629 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:35:55,629 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:35:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:35:55,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 05:35:55,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:55,697 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] [2020-09-25 05:35:55,697 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:55,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1479057050, now seen corresponding path program 1 times [2020-09-25 05:35:55,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:55,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902933406] [2020-09-25 05:35:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:56,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:58,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:59,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:59,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:59,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:59,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:00,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:00,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:00,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 05:36:00,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 05:36:00,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:36:01,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:01,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:36:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:36:01,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 05:36:01,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:36:01,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:01,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:01,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:01,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:01,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:01,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 05:36:01,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:01,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:01,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:01,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:36:01,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:01,456 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 05:36:01,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902933406] [2020-09-25 05:36:01,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:36:01,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:36:01,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563496238] [2020-09-25 05:36:01,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:36:01,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:01,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:36:01,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:36:01,494 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:36:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:03,937 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 05:36:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:36:03,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-09-25 05:36:03,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:03,972 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 05:36:03,972 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 05:36:03,982 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 05:36:04,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 05:36:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 05:36:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 05:36:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 05:36:04,096 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 145 [2020-09-25 05:36:04,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:04,098 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 05:36:04,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:36:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 05:36:04,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 05:36:04,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:04,108 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] [2020-09-25 05:36:04,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:36:04,109 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:04,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1676334790, now seen corresponding path program 1 times [2020-09-25 05:36:04,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:04,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342665270] [2020-09-25 05:36:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:04,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:04,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:05,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:06,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:07,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:08,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:08,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:08,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:09,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:09,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 05:36:09,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:36:09,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:36:09,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:09,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:36:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 05:36:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:36:09,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:09,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:09,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:09,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:09,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:09,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:36:09,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:09,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:09,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:09,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:09,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:09,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:09,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:09,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:09,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:36:09,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:09,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 05:36:09,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:09,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:09,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:09,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:09,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:36:09,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:09,433 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 05:36:09,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342665270] [2020-09-25 05:36:09,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:09,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:36:09,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906448188] [2020-09-25 05:36:09,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:09,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:09,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:09,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:09,438 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 05:36:11,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:11,113 INFO L93 Difference]: Finished difference Result 1623 states and 2079 transitions. [2020-09-25 05:36:11,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:11,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-25 05:36:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:11,126 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 05:36:11,127 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 05:36:11,130 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 05:36:11,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 05:36:11,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 816. [2020-09-25 05:36:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 05:36:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1043 transitions. [2020-09-25 05:36:11,175 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1043 transitions. Word has length 163 [2020-09-25 05:36:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:11,176 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 1043 transitions. [2020-09-25 05:36:11,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1043 transitions. [2020-09-25 05:36:11,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 05:36:11,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:11,183 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] [2020-09-25 05:36:11,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:36:11,183 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:11,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:11,184 INFO L82 PathProgramCache]: Analyzing trace with hash -48105695, now seen corresponding path program 1 times [2020-09-25 05:36:11,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:11,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143463897] [2020-09-25 05:36:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:11,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:11,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:11,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:12,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:14,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:14,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:16,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:16,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 05:36:16,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:36:16,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 05:36:16,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:16,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:36:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 05:36:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:16,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:16,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:16,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:16,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:16,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:16,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:36:16,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:16,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:16,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:16,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:16,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:16,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:16,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:16,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:36:16,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:16,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 05:36:16,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:16,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:16,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:16,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:36:16,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:16,502 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 05:36:16,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143463897] [2020-09-25 05:36:16,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:16,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:36:16,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706264099] [2020-09-25 05:36:16,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:16,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:16,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:16,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:16,505 INFO L87 Difference]: Start difference. First operand 816 states and 1043 transitions. Second operand 5 states. [2020-09-25 05:36:18,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:18,636 INFO L93 Difference]: Finished difference Result 2075 states and 2796 transitions. [2020-09-25 05:36:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:18,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-25 05:36:18,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:18,652 INFO L225 Difference]: With dead ends: 2075 [2020-09-25 05:36:18,653 INFO L226 Difference]: Without dead ends: 1281 [2020-09-25 05:36:18,657 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 05:36:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-09-25 05:36:18,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1269. [2020-09-25 05:36:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-09-25 05:36:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1663 transitions. [2020-09-25 05:36:18,719 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1663 transitions. Word has length 171 [2020-09-25 05:36:18,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:18,720 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1663 transitions. [2020-09-25 05:36:18,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:18,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1663 transitions. [2020-09-25 05:36:18,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 05:36:18,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:18,728 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] [2020-09-25 05:36:18,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:36:18,729 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:18,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:18,729 INFO L82 PathProgramCache]: Analyzing trace with hash 587130536, now seen corresponding path program 1 times [2020-09-25 05:36:18,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:18,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192790510] [2020-09-25 05:36:18,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:18,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:18,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:19,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:19,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:23,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:23,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 05:36:23,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:36:23,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:36:23,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:23,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:23,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:23,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 05:36:23,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:36:23,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:23,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:23,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:23,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:23,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:23,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:23,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 05:36:23,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:23,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:23,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:23,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:23,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:23,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 05:36:23,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:23,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 05:36:23,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:23,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:23,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:23,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:23,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 05:36:23,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:23,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 05:36:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:23,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:24,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:24,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:36:24,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 05:36:24,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:24,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:36:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:36:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:24,190 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 05:36:24,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192790510] [2020-09-25 05:36:24,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:24,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:36:24,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169930068] [2020-09-25 05:36:24,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:36:24,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:24,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:36:24,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:36:24,195 INFO L87 Difference]: Start difference. First operand 1269 states and 1663 transitions. Second operand 7 states. [2020-09-25 05:36:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:26,840 INFO L93 Difference]: Finished difference Result 3536 states and 5170 transitions. [2020-09-25 05:36:26,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:36:26,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-09-25 05:36:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:26,861 INFO L225 Difference]: With dead ends: 3536 [2020-09-25 05:36:26,862 INFO L226 Difference]: Without dead ends: 2289 [2020-09-25 05:36:26,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:36:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-09-25 05:36:26,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2056. [2020-09-25 05:36:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2056 states. [2020-09-25 05:36:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2620 transitions. [2020-09-25 05:36:26,992 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2620 transitions. Word has length 220 [2020-09-25 05:36:26,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:26,993 INFO L479 AbstractCegarLoop]: Abstraction has 2056 states and 2620 transitions. [2020-09-25 05:36:26,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:36:26,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2620 transitions. [2020-09-25 05:36:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 05:36:27,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:27,004 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] [2020-09-25 05:36:27,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:36:27,005 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:27,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:27,005 INFO L82 PathProgramCache]: Analyzing trace with hash 329651812, now seen corresponding path program 1 times [2020-09-25 05:36:27,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:27,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398907817] [2020-09-25 05:36:27,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:27,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:27,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:32,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:32,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 05:36:32,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:36:32,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:36:32,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:32,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 05:36:32,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 05:36:32,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:32,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:32,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:32,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:32,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:32,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:32,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:36:32,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:32,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:32,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:32,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:36:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:32,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:32,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:32,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:36:32,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:32,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:36:32,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:32,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 05:36:32,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:32,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 05:36:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:32,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:32,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:32,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:36:32,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:32,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 05:36:32,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:32,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:36:32,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 05:36:32,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:32,390 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 05:36:32,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398907817] [2020-09-25 05:36:32,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:32,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:36:32,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687370285] [2020-09-25 05:36:32,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:36:32,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:32,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:36:32,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:36:32,393 INFO L87 Difference]: Start difference. First operand 2056 states and 2620 transitions. Second operand 8 states. [2020-09-25 05:36:35,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:35,572 INFO L93 Difference]: Finished difference Result 5394 states and 7314 transitions. [2020-09-25 05:36:35,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 05:36:35,573 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-09-25 05:36:35,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:35,592 INFO L225 Difference]: With dead ends: 5394 [2020-09-25 05:36:35,592 INFO L226 Difference]: Without dead ends: 3370 [2020-09-25 05:36:35,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:36:35,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2020-09-25 05:36:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3138. [2020-09-25 05:36:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-09-25 05:36:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4055 transitions. [2020-09-25 05:36:35,707 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4055 transitions. Word has length 223 [2020-09-25 05:36:35,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:35,708 INFO L479 AbstractCegarLoop]: Abstraction has 3138 states and 4055 transitions. [2020-09-25 05:36:35,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:36:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4055 transitions. [2020-09-25 05:36:35,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 05:36:35,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:35,728 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] [2020-09-25 05:36:35,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:36:35,729 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:35,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:35,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1859791105, now seen corresponding path program 1 times [2020-09-25 05:36:35,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:35,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623506151] [2020-09-25 05:36:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:35,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:35,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:36,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:36,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:36,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:36,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:38,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:38,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:38,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:39,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking...