/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:31:01,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:31:01,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:31:01,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:31:01,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:31:01,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:31:01,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:31:01,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:31:01,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:31:01,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:31:01,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:31:01,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:31:01,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:31:01,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:31:01,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:31:01,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:31:01,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:31:01,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:31:01,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:31:01,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:31:01,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:31:01,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:31:01,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:31:01,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:31:01,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:31:01,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:31:01,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:31:01,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:31:01,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:31:01,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:31:01,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:31:01,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:31:01,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:31:01,343 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:31:01,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:31:01,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:31:01,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:31:01,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:31:01,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:31:01,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:31:01,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:31:01,349 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 04:31:01,377 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:31:01,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:31:01,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:31:01,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:31:01,379 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:31:01,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:31:01,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:31:01,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:31:01,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:31:01,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:31:01,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:31:01,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:31:01,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:31:01,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:31:01,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:31:01,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:31:01,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:31:01,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:31:01,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:31:01,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:31:01,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:31:01,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:01,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:31:01,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:31:01,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:31:01,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:31:01,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:31:01,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:31:01,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:31:01,384 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:31:01,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:01,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:01,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:01,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:01,854 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:01,856 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 04:31:01,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f118f5722/dafc3b56454249b4bf6c703eb897ebdd/FLAG7d2b45d83 [2020-09-25 04:31:02,604 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:02,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 04:31:02,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f118f5722/dafc3b56454249b4bf6c703eb897ebdd/FLAG7d2b45d83 [2020-09-25 04:31:02,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f118f5722/dafc3b56454249b4bf6c703eb897ebdd [2020-09-25 04:31:02,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:02,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:02,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:02,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:02,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:02,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:02, skipping insertion in model container [2020-09-25 04:31:02,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:02" (1/1) ... [2020-09-25 04:31:02,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:02,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:03,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:03,553 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:03,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:03,721 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:03,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:03 WrapperNode [2020-09-25 04:31:03,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:03,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:03,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:03,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:03,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:03" (1/1) ... [2020-09-25 04:31:03,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:03" (1/1) ... [2020-09-25 04:31:03,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:03" (1/1) ... [2020-09-25 04:31:03,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:03" (1/1) ... [2020-09-25 04:31:03,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:03" (1/1) ... [2020-09-25 04:31:03,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:03" (1/1) ... [2020-09-25 04:31:03,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:03" (1/1) ... [2020-09-25 04:31:03,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:03,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:03,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:03,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:03,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:03" (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 04:31:03,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:03,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:03,954 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:03,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:03,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:03,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:03,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:05,642 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:05,642 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:05,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:05 BoogieIcfgContainer [2020-09-25 04:31:05,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:05,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:05,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:05,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:05,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:02" (1/3) ... [2020-09-25 04:31:05,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a715b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:05, skipping insertion in model container [2020-09-25 04:31:05,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:03" (2/3) ... [2020-09-25 04:31:05,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a715b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:05, skipping insertion in model container [2020-09-25 04:31:05,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:05" (3/3) ... [2020-09-25 04:31:05,663 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label54.c [2020-09-25 04:31:05,676 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:05,687 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:05,711 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:05,748 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:05,748 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:05,748 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:05,748 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:05,748 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:05,748 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:05,749 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:05,749 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:05,782 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:31:05,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 04:31:05,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:05,797 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] [2020-09-25 04:31:05,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:05,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:05,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2126243537, now seen corresponding path program 1 times [2020-09-25 04:31:05,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:05,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484036615] [2020-09-25 04:31:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:06,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:06,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:07,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:07,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:31:07,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:31:07,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1416 [2020-09-25 04:31:07,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:07,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:31:07,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:07,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:31:07,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:07,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:07,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:07,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:07,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:07,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:31:07,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:07,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:07,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:31:07,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:07,723 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 04:31:07,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484036615] [2020-09-25 04:31:07,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:07,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:31:07,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186182185] [2020-09-25 04:31:07,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:31:07,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:07,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:31:07,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:31:07,760 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:31:09,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:09,811 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 04:31:09,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:31:09,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-09-25 04:31:09,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:09,854 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 04:31:09,855 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 04:31:09,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:09,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 04:31:09,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 04:31:09,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 04:31:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 04:31:09,963 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 81 [2020-09-25 04:31:09,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:09,964 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 04:31:09,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:31:09,965 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 04:31:09,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 04:31:09,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:09,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:31:09,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:09,975 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:09,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:09,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1687287808, now seen corresponding path program 1 times [2020-09-25 04:31:09,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:09,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980190231] [2020-09-25 04:31:09,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:10,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:10,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:10,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:10,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:11,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:11,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:15,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 04:31:15,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:15,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:31:15,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:15,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:31:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:31:15,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:15,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:15,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:15,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:15,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:15,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:15,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:15,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:15,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:15,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:15,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:15,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:15,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:15,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:15,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 04:31:15,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:15,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:15,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:15,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:31:15,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:15,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980190231] [2020-09-25 04:31:15,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:15,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:15,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85670836] [2020-09-25 04:31:15,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:15,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:15,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:15,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:15,431 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 04:31:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:17,003 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 04:31:17,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:17,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 04:31:17,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:17,009 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 04:31:17,016 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 04:31:17,019 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 04:31:17,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 04:31:17,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 04:31:17,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 04:31:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 04:31:17,084 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 160 [2020-09-25 04:31:17,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:17,085 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 04:31:17,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:17,086 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 04:31:17,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 04:31:17,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:17,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:31:17,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:17,093 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:17,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:17,094 INFO L82 PathProgramCache]: Analyzing trace with hash 935848482, now seen corresponding path program 1 times [2020-09-25 04:31:17,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:17,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041667818] [2020-09-25 04:31:17,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:17,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:17,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:18,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:22,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:22,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 04:31:22,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:31:22,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:22,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:22,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:31:22,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:31:22,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:22,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:22,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:22,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:22,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:22,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:22,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:22,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:22,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:22,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:22,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:22,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:22,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:22,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:22,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:31:22,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:22,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 04:31:22,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:22,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:22,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:22,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:22,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:31:22,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:22,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041667818] [2020-09-25 04:31:22,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:22,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:22,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171261209] [2020-09-25 04:31:22,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:22,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:22,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:22,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:22,467 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 5 states. [2020-09-25 04:31:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:24,520 INFO L93 Difference]: Finished difference Result 1549 states and 1979 transitions. [2020-09-25 04:31:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:24,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 04:31:24,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:24,527 INFO L225 Difference]: With dead ends: 1549 [2020-09-25 04:31:24,528 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 04:31:24,530 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 04:31:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 04:31:24,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 999. [2020-09-25 04:31:24,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-25 04:31:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1219 transitions. [2020-09-25 04:31:24,564 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1219 transitions. Word has length 170 [2020-09-25 04:31:24,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:24,564 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1219 transitions. [2020-09-25 04:31:24,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1219 transitions. [2020-09-25 04:31:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 04:31:24,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:24,570 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 04:31:24,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:24,571 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:24,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:24,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1528839770, now seen corresponding path program 1 times [2020-09-25 04:31:24,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:24,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668052420] [2020-09-25 04:31:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:24,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:25,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:27,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 04:31:27,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3156 [2020-09-25 04:31:27,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:27,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 04:31:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 04:31:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:27,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:27,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:27,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:27,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:31:27,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:27,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:27,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:27,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:27,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:27,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:31:27,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:27,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 04:31:27,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:27,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:27,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:27,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:28,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668052420] [2020-09-25 04:31:28,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:28,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:28,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478610665] [2020-09-25 04:31:28,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:28,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:28,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:28,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:28,043 INFO L87 Difference]: Start difference. First operand 999 states and 1219 transitions. Second operand 5 states. [2020-09-25 04:31:29,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:29,562 INFO L93 Difference]: Finished difference Result 2157 states and 2726 transitions. [2020-09-25 04:31:29,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:29,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-09-25 04:31:29,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:29,570 INFO L225 Difference]: With dead ends: 2157 [2020-09-25 04:31:29,571 INFO L226 Difference]: Without dead ends: 1323 [2020-09-25 04:31:29,574 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 04:31:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-09-25 04:31:29,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1303. [2020-09-25 04:31:29,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1303 states. [2020-09-25 04:31:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1548 transitions. [2020-09-25 04:31:29,624 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1548 transitions. Word has length 172 [2020-09-25 04:31:29,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:29,625 INFO L479 AbstractCegarLoop]: Abstraction has 1303 states and 1548 transitions. [2020-09-25 04:31:29,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:29,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1548 transitions. [2020-09-25 04:31:29,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 04:31:29,632 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:29,632 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:29,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:29,632 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:29,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:29,633 INFO L82 PathProgramCache]: Analyzing trace with hash 620665156, now seen corresponding path program 1 times [2020-09-25 04:31:29,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:29,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457968193] [2020-09-25 04:31:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:29,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:29,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:31,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:32,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:33,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:34,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 04:31:34,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:31:34,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5090 [2020-09-25 04:31:34,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:34,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:34,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:31:34,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 04:31:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:34,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:34,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:34,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:34,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:34,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:31:34,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:34,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:34,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:31:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:34,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:35,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:35,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:31:35,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 04:31:35,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:35,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:35,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:31:35,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:35,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:31:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:35,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:35,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:31:35,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:35,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 04:31:35,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:35,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:35,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:35,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:35,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457968193] [2020-09-25 04:31:35,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:35,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:35,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99864323] [2020-09-25 04:31:35,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:35,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:35,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:35,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:35,416 INFO L87 Difference]: Start difference. First operand 1303 states and 1548 transitions. Second operand 7 states. [2020-09-25 04:31:37,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:37,793 INFO L93 Difference]: Finished difference Result 2945 states and 3616 transitions. [2020-09-25 04:31:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:31:37,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-09-25 04:31:37,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:37,803 INFO L225 Difference]: With dead ends: 2945 [2020-09-25 04:31:37,804 INFO L226 Difference]: Without dead ends: 1491 [2020-09-25 04:31:37,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:31:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2020-09-25 04:31:37,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1459. [2020-09-25 04:31:37,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2020-09-25 04:31:37,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1696 transitions. [2020-09-25 04:31:37,862 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1696 transitions. Word has length 253 [2020-09-25 04:31:37,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:37,864 INFO L479 AbstractCegarLoop]: Abstraction has 1459 states and 1696 transitions. [2020-09-25 04:31:37,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:37,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1696 transitions. [2020-09-25 04:31:37,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-25 04:31:37,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:37,871 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:37,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:31:37,871 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:37,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:37,872 INFO L82 PathProgramCache]: Analyzing trace with hash 420038777, now seen corresponding path program 1 times [2020-09-25 04:31:37,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:37,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057555604] [2020-09-25 04:31:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:37,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:38,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:38,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:38,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:40,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:42,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:42,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-25 04:31:42,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:31:42,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 04:31:42,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:42,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:31:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 04:31:42,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:42,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:42,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:43,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:43,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:43,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:31:43,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:43,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:43,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:43,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:43,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:43,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:43,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:43,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:43,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 04:31:43,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:43,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:31:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:31:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:43,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:43,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 04:31:43,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 04:31:43,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:43,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 04:31:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:31:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:43,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057555604] [2020-09-25 04:31:43,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:43,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:43,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680912337] [2020-09-25 04:31:43,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:43,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:43,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:43,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:43,453 INFO L87 Difference]: Start difference. First operand 1459 states and 1696 transitions. Second operand 7 states. [2020-09-25 04:31:45,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:45,597 INFO L93 Difference]: Finished difference Result 3259 states and 3922 transitions. [2020-09-25 04:31:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:31:45,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-09-25 04:31:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:45,614 INFO L225 Difference]: With dead ends: 3259 [2020-09-25 04:31:45,614 INFO L226 Difference]: Without dead ends: 1797 [2020-09-25 04:31:45,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:31:45,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2020-09-25 04:31:45,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1767. [2020-09-25 04:31:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1767 states. [2020-09-25 04:31:45,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2111 transitions. [2020-09-25 04:31:45,692 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2111 transitions. Word has length 258 [2020-09-25 04:31:45,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:45,693 INFO L479 AbstractCegarLoop]: Abstraction has 1767 states and 2111 transitions. [2020-09-25 04:31:45,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:45,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2111 transitions. [2020-09-25 04:31:45,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-09-25 04:31:45,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:45,701 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:45,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:31:45,701 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:45,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:45,702 INFO L82 PathProgramCache]: Analyzing trace with hash -843278281, now seen corresponding path program 1 times [2020-09-25 04:31:45,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:45,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860096200] [2020-09-25 04:31:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:45,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking...