/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/Problem01_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:26:22,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:26:22,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:26:22,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:26:22,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:26:22,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:26:22,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:26:22,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:26:22,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:26:22,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:26:22,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:26:22,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:26:22,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:26:22,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:26:22,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:26:22,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:26:22,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:26:22,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:26:22,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:26:22,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:26:22,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:26:22,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:26:22,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:26:22,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:26:22,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:26:22,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:26:22,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:26:22,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:26:22,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:26:22,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:26:22,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:26:22,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:26:22,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:26:22,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:26:22,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:26:22,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:26:22,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:26:22,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:26:22,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:26:22,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:26:22,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:26:22,740 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 04:26:22,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:26:22,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:26:22,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:26:22,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:26:22,788 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:26:22,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:26:22,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:26:22,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:26:22,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:26:22,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:26:22,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:26:22,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:26:22,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:26:22,790 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:26:22,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:26:22,790 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:26:22,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:26:22,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:26:22,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:26:22,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:26:22,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:26:22,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:26:22,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:26:22,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:26:22,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:26:22,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:26:22,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:26:22,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:26:22,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:26:22,793 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 04:26:23,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:26:23,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:26:23,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:26:23,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:26:23,305 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:26:23,306 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 04:26:23,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/763650a6a/99351ce14883430f9b8fe77721bbb7cd/FLAG7820cb57b [2020-09-25 04:26:24,080 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:26:24,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 04:26:24,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/763650a6a/99351ce14883430f9b8fe77721bbb7cd/FLAG7820cb57b [2020-09-25 04:26:24,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/763650a6a/99351ce14883430f9b8fe77721bbb7cd [2020-09-25 04:26:24,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:26:24,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:26:24,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:24,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:26:24,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:26:24,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:24" (1/1) ... [2020-09-25 04:26:24,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:24, skipping insertion in model container [2020-09-25 04:26:24,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:24" (1/1) ... [2020-09-25 04:26:24,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:26:24,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:26:24,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:24,916 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:26:25,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:25,156 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:26:25,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:25 WrapperNode [2020-09-25 04:26:25,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:25,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:26:25,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:26:25,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:26:25,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:25" (1/1) ... [2020-09-25 04:26:25,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:25" (1/1) ... [2020-09-25 04:26:25,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:25" (1/1) ... [2020-09-25 04:26:25,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:25" (1/1) ... [2020-09-25 04:26:25,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:25" (1/1) ... [2020-09-25 04:26:25,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:25" (1/1) ... [2020-09-25 04:26:25,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:25" (1/1) ... [2020-09-25 04:26:25,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:26:25,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:26:25,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:26:25,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:26:25,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:25" (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 04:26:25,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:26:25,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:26:25,339 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:26:25,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:26:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:26:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:26:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:26:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:26:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:26:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:26:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:26:26,655 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:26:26,656 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:26:26,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:26 BoogieIcfgContainer [2020-09-25 04:26:26,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:26:26,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:26:26,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:26:26,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:26:26,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:26:24" (1/3) ... [2020-09-25 04:26:26,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:26, skipping insertion in model container [2020-09-25 04:26:26,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:25" (2/3) ... [2020-09-25 04:26:26,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:26, skipping insertion in model container [2020-09-25 04:26:26,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:26" (3/3) ... [2020-09-25 04:26:26,677 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-09-25 04:26:26,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:26:26,701 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:26:26,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:26:26,759 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:26:26,760 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:26:26,760 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:26:26,760 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:26:26,760 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:26:26,760 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:26:26,761 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:26:26,761 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:26:26,794 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:26:26,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 04:26:26,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:26,816 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] [2020-09-25 04:26:26,817 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:26,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:26,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2032478133, now seen corresponding path program 1 times [2020-09-25 04:26:26,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:26,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036488076] [2020-09-25 04:26:26,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:27,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:30,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:32,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 04:26:32,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:26:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 04:26:32,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:32,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:32,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:26:32,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 04:26:32,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:26:32,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:32,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:32,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:32,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:32,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:26:32,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:32,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:32,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:26:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:32,506 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 04:26:32,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036488076] [2020-09-25 04:26:32,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:32,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:26:32,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335937044] [2020-09-25 04:26:32,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:26:32,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:32,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:26:32,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:26:32,540 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:26:34,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:34,826 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 04:26:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:26:34,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 04:26:34,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:34,878 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 04:26:34,878 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 04:26:34,892 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 04:26:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 04:26:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 04:26:35,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:26:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 04:26:35,057 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 127 [2020-09-25 04:26:35,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:35,058 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 04:26:35,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:26:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 04:26:35,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 04:26:35,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:35,065 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:26:35,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:26:35,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:35,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:35,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1111410035, now seen corresponding path program 1 times [2020-09-25 04:26:35,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:35,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683578830] [2020-09-25 04:26:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:35,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:35,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:40,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:40,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 04:26:40,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:26:40,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 04:26:40,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:40,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:26:40,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:26:40,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:40,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:40,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:40,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:40,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:40,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:26:40,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:40,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:40,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:40,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:40,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:26:40,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:40,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:40,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:40,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:40,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:40,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:40,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 04:26:40,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:40,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:26:40,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:40,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683578830] [2020-09-25 04:26:40,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:40,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:26:40,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040445069] [2020-09-25 04:26:40,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:40,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:40,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:40,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:40,404 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 04:26:42,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:42,841 INFO L93 Difference]: Finished difference Result 1591 states and 1980 transitions. [2020-09-25 04:26:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:26:42,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-09-25 04:26:42,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:42,854 INFO L225 Difference]: With dead ends: 1591 [2020-09-25 04:26:42,854 INFO L226 Difference]: Without dead ends: 1012 [2020-09-25 04:26:42,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:26:42,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-09-25 04:26:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 966. [2020-09-25 04:26:42,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-09-25 04:26:42,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1174 transitions. [2020-09-25 04:26:42,918 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1174 transitions. Word has length 148 [2020-09-25 04:26:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:42,918 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1174 transitions. [2020-09-25 04:26:42,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:42,919 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1174 transitions. [2020-09-25 04:26:42,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 04:26:42,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:42,924 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:26:42,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:26:42,925 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:42,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:42,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1441250023, now seen corresponding path program 1 times [2020-09-25 04:26:42,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:42,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174086761] [2020-09-25 04:26:42,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:42,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:43,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:46,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:46,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:47,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:47,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 04:26:47,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:26:47,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:26:47,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:47,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:26:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:26:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:26:48,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:48,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:48,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:48,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:48,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:48,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 04:26:48,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:48,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:48,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:26:48,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:48,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:48,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:48,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:48,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:26:48,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:48,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 04:26:48,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:48,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:48,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:26:48,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:26:48,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:48,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174086761] [2020-09-25 04:26:48,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:48,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:26:48,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968913033] [2020-09-25 04:26:48,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:26:48,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:48,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:26:48,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:26:48,230 INFO L87 Difference]: Start difference. First operand 966 states and 1174 transitions. Second operand 8 states. [2020-09-25 04:26:51,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:51,449 INFO L93 Difference]: Finished difference Result 3167 states and 4133 transitions. [2020-09-25 04:26:51,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:26:51,450 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 04:26:51,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:51,470 INFO L225 Difference]: With dead ends: 3167 [2020-09-25 04:26:51,471 INFO L226 Difference]: Without dead ends: 2225 [2020-09-25 04:26:51,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:26:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2020-09-25 04:26:51,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 2068. [2020-09-25 04:26:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2020-09-25 04:26:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2599 transitions. [2020-09-25 04:26:51,612 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2599 transitions. Word has length 149 [2020-09-25 04:26:51,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:51,613 INFO L479 AbstractCegarLoop]: Abstraction has 2068 states and 2599 transitions. [2020-09-25 04:26:51,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:26:51,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2599 transitions. [2020-09-25 04:26:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 04:26:51,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:51,631 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:26:51,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:26:51,632 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:51,632 INFO L82 PathProgramCache]: Analyzing trace with hash -2031815638, now seen corresponding path program 1 times [2020-09-25 04:26:51,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:51,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344059020] [2020-09-25 04:26:51,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:51,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:51,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:52,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:53,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:54,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:55,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:56,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:56,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:56,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 04:26:56,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 04:26:56,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:56,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 04:26:56,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:26:56,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:56,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:56,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:56,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:56,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:56,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:26:56,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:56,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:56,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:56,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:56,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:56,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:26:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:56,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:56,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:56,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:26:56,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:56,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 04:26:56,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:56,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:56,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:26:56,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:56,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 04:26:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:56,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:56,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:56,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:56,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:56,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 04:26:56,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:56,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:26:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:26:56,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344059020] [2020-09-25 04:26:56,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:56,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:26:56,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20145063] [2020-09-25 04:26:56,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:26:56,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:56,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:26:56,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:26:56,981 INFO L87 Difference]: Start difference. First operand 2068 states and 2599 transitions. Second operand 8 states. [2020-09-25 04:26:59,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:59,072 INFO L93 Difference]: Finished difference Result 5410 states and 6930 transitions. [2020-09-25 04:26:59,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:26:59,072 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 04:26:59,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:59,092 INFO L225 Difference]: With dead ends: 5410 [2020-09-25 04:26:59,092 INFO L226 Difference]: Without dead ends: 3366 [2020-09-25 04:26:59,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:26:59,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2020-09-25 04:26:59,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 2650. [2020-09-25 04:26:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2650 states. [2020-09-25 04:26:59,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3380 transitions. [2020-09-25 04:26:59,194 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3380 transitions. Word has length 165 [2020-09-25 04:26:59,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:59,195 INFO L479 AbstractCegarLoop]: Abstraction has 2650 states and 3380 transitions. [2020-09-25 04:26:59,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:26:59,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3380 transitions. [2020-09-25 04:26:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 04:26:59,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:59,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:59,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:26:59,206 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:59,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:59,206 INFO L82 PathProgramCache]: Analyzing trace with hash -531650440, now seen corresponding path program 1 times [2020-09-25 04:26:59,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:59,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143360109] [2020-09-25 04:26:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:59,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:59,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:59,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:01,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:02,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:03,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:04,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 04:27:04,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:27:04,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 04:27:04,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:04,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:27:04,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:27:04,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:04,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:04,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:04,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:27:04,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:04,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:27:04,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:04,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:04,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:04,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:04,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:04,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:27:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:04,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:04,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:27:04,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:04,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:27:04,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:04,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:27:04,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:04,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:27:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:04,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:04,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:27:04,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:27:04,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:04,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:04,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:27:04,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:27:04,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143360109] [2020-09-25 04:27:04,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:04,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:27:04,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117283011] [2020-09-25 04:27:04,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:27:04,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:04,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:27:04,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:27:04,509 INFO L87 Difference]: Start difference. First operand 2650 states and 3380 transitions. Second operand 7 states. [2020-09-25 04:27:06,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:06,588 INFO L93 Difference]: Finished difference Result 5799 states and 7644 transitions. [2020-09-25 04:27:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:27:06,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-09-25 04:27:06,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:06,614 INFO L225 Difference]: With dead ends: 5799 [2020-09-25 04:27:06,614 INFO L226 Difference]: Without dead ends: 3173 [2020-09-25 04:27:06,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:27:06,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2020-09-25 04:27:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 2870. [2020-09-25 04:27:06,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2870 states. [2020-09-25 04:27:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3604 transitions. [2020-09-25 04:27:06,754 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3604 transitions. Word has length 170 [2020-09-25 04:27:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:06,755 INFO L479 AbstractCegarLoop]: Abstraction has 2870 states and 3604 transitions. [2020-09-25 04:27:06,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:27:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3604 transitions. [2020-09-25 04:27:06,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 04:27:06,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:06,767 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 04:27:06,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:27:06,767 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:06,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:06,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2069482775, now seen corresponding path program 1 times [2020-09-25 04:27:06,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:06,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449030291] [2020-09-25 04:27:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:06,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:06,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:07,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:07,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:07,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:08,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:09,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:10,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:11,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 04:27:11,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 04:27:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 04:27:11,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:11,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:27:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:27:11,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:11,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:11,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:27:11,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:11,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 04:27:11,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:11,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:11,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:11,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:11,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:27:11,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:11,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:27:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:11,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:12,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:12,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:27:12,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:12,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 04:27:12,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:12,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:12,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:27:12,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:12,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 04:27:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:12,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:12,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:12,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:27:12,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:27:12,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:12,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:27:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 04:27:12,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449030291] [2020-09-25 04:27:12,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:12,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:27:12,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699715085] [2020-09-25 04:27:12,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:27:12,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:12,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:27:12,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:27:12,089 INFO L87 Difference]: Start difference. First operand 2870 states and 3604 transitions. Second operand 7 states.