/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=SMALLEST --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_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:20:09,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:20:09,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:20:09,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:20:09,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:20:09,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:20:09,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:20:09,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:20:09,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:20:09,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:20:09,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:20:09,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:20:09,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:20:09,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:20:09,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:20:09,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:20:09,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:20:09,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:20:09,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:20:09,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:20:09,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:20:09,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:20:09,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:20:09,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:20:09,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:20:09,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:20:09,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:20:09,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:20:09,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:20:09,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:20:09,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:20:09,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:20:09,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:20:09,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:20:09,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:20:09,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:20:09,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:20:09,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:20:09,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:20:09,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:20:09,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:20:09,723 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 [2020-09-24 18:20:09,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:20:09,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:20:09,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:20:09,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:20:09,752 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:20:09,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:20:09,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:20:09,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:20:09,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:20:09,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:20:09,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:20:09,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:20:09,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:20:09,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:20:09,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:20:09,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:20:09,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:20:09,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:20:09,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:20:09,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:20:09,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:20:09,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:09,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:20:09,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:20:09,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:20:09,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:20:09,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:20:09,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:20:09,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:20:09,759 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:20:10,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:20:10,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:20:10,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:20:10,281 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:20:10,282 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:20:10,283 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-24 18:20:10,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5658c910/7e4daf8b5a444e9abb4dbd8fa544cf54/FLAGc24165654 [2020-09-24 18:20:11,020 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:20:11,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-24 18:20:11,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5658c910/7e4daf8b5a444e9abb4dbd8fa544cf54/FLAGc24165654 [2020-09-24 18:20:11,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5658c910/7e4daf8b5a444e9abb4dbd8fa544cf54 [2020-09-24 18:20:11,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:20:11,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:20:11,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:11,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:20:11,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:20:11,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:11" (1/1) ... [2020-09-24 18:20:11,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21af3704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:11, skipping insertion in model container [2020-09-24 18:20:11,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:11" (1/1) ... [2020-09-24 18:20:11,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:20:11,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:20:11,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:12,004 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:20:12,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:12,272 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:20:12,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:12 WrapperNode [2020-09-24 18:20:12,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:12,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:20:12,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:20:12,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:20:12,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:12" (1/1) ... [2020-09-24 18:20:12,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:12" (1/1) ... [2020-09-24 18:20:12,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:12" (1/1) ... [2020-09-24 18:20:12,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:12" (1/1) ... [2020-09-24 18:20:12,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:12" (1/1) ... [2020-09-24 18:20:12,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:12" (1/1) ... [2020-09-24 18:20:12,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:12" (1/1) ... [2020-09-24 18:20:12,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:20:12,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:20:12,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:20:12,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:20:12,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:12" (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 [2020-09-24 18:20:12,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:20:12,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:20:12,516 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:20:12,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:20:12,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:20:12,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:20:12,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:20:12,518 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:20:12,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:20:12,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:20:12,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:20:13,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:20:13,862 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:20:13,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:13 BoogieIcfgContainer [2020-09-24 18:20:13,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:20:13,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:20:13,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:20:13,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:20:13,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:20:11" (1/3) ... [2020-09-24 18:20:13,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570d3c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:13, skipping insertion in model container [2020-09-24 18:20:13,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:12" (2/3) ... [2020-09-24 18:20:13,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@570d3c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:13, skipping insertion in model container [2020-09-24 18:20:13,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:13" (3/3) ... [2020-09-24 18:20:13,893 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2020-09-24 18:20:13,909 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:20:13,930 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:20:13,956 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:20:13,996 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:20:13,997 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:20:13,997 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:20:13,997 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:20:13,997 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:20:13,997 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:20:13,997 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:20:13,998 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:20:14,030 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:20:14,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-24 18:20:14,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:14,054 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] [2020-09-24 18:20:14,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:14,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:14,060 INFO L82 PathProgramCache]: Analyzing trace with hash -857113145, now seen corresponding path program 1 times [2020-09-24 18:20:14,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:14,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593212538] [2020-09-24 18:20:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:14,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:15,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:16,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:16,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:17,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:19,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:19,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 18:20:19,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:20:19,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 18:20:19,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:20:19,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 18:20:19,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:20:19,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:19,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:19,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:19,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:20:19,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:19,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:20:19,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:19,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593212538] [2020-09-24 18:20:19,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:19,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:20:19,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342372420] [2020-09-24 18:20:19,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:20:19,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:19,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:20:19,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:20:19,684 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:20:21,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:21,868 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-24 18:20:21,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:20:21,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-09-24 18:20:21,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:21,900 INFO L225 Difference]: With dead ends: 1268 [2020-09-24 18:20:21,900 INFO L226 Difference]: Without dead ends: 694 [2020-09-24 18:20:21,911 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 [2020-09-24 18:20:21,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-24 18:20:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-24 18:20:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 18:20:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 18:20:22,028 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 110 [2020-09-24 18:20:22,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:22,029 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 18:20:22,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:20:22,030 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 18:20:22,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-24 18:20:22,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:22,047 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] [2020-09-24 18:20:22,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:20:22,048 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:22,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:22,048 INFO L82 PathProgramCache]: Analyzing trace with hash -431161361, now seen corresponding path program 1 times [2020-09-24 18:20:22,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:22,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835157952] [2020-09-24 18:20:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:22,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:22,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:24,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:24,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:26,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:27,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:27,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 18:20:27,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:20:27,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 18:20:27,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:20:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 18:20:27,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:27,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:27,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:27,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:27,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:27,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:20:27,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:27,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:27,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:27,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:27,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:27,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:27,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:27,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 18:20:27,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:20:27,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:27,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835157952] [2020-09-24 18:20:27,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:27,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:20:27,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591517492] [2020-09-24 18:20:27,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:20:27,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:27,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:20:27,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:27,438 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 6 states. [2020-09-24 18:20:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:30,488 INFO L93 Difference]: Finished difference Result 1877 states and 2385 transitions. [2020-09-24 18:20:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:20:30,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-09-24 18:20:30,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:30,499 INFO L225 Difference]: With dead ends: 1877 [2020-09-24 18:20:30,499 INFO L226 Difference]: Without dead ends: 1298 [2020-09-24 18:20:30,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:20:30,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2020-09-24 18:20:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1034. [2020-09-24 18:20:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-09-24 18:20:30,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1310 transitions. [2020-09-24 18:20:30,559 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1310 transitions. Word has length 131 [2020-09-24 18:20:30,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:30,560 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1310 transitions. [2020-09-24 18:20:30,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:20:30,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1310 transitions. [2020-09-24 18:20:30,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-24 18:20:30,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:30,566 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:30,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:20:30,566 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:30,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:30,567 INFO L82 PathProgramCache]: Analyzing trace with hash 39430160, now seen corresponding path program 1 times [2020-09-24 18:20:30,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:30,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344863793] [2020-09-24 18:20:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:30,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:31,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:31,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:31,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:32,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:35,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:35,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-24 18:20:35,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:20:35,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:20:35,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:35,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:35,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 18:20:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 18:20:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:35,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:35,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:35,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:35,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:35,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:35,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:35,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:35,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:35,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:35,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:35,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:35,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:20:35,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:35,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:20:35,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:35,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:35,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:20:35,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:35,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344863793] [2020-09-24 18:20:35,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:35,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:35,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995861249] [2020-09-24 18:20:35,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:35,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:35,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:35,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:35,870 INFO L87 Difference]: Start difference. First operand 1034 states and 1310 transitions. Second operand 5 states. [2020-09-24 18:20:37,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:37,908 INFO L93 Difference]: Finished difference Result 2483 states and 3245 transitions. [2020-09-24 18:20:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:37,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-24 18:20:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:37,917 INFO L225 Difference]: With dead ends: 2483 [2020-09-24 18:20:37,917 INFO L226 Difference]: Without dead ends: 998 [2020-09-24 18:20:37,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:37,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2020-09-24 18:20:37,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 988. [2020-09-24 18:20:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-09-24 18:20:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1231 transitions. [2020-09-24 18:20:37,972 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1231 transitions. Word has length 140 [2020-09-24 18:20:37,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:37,979 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1231 transitions. [2020-09-24 18:20:37,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:37,980 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1231 transitions. [2020-09-24 18:20:37,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-24 18:20:37,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:37,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:37,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:20:37,992 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:37,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:37,992 INFO L82 PathProgramCache]: Analyzing trace with hash -439956008, now seen corresponding path program 1 times [2020-09-24 18:20:37,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:37,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517540975] [2020-09-24 18:20:37,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:38,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:39,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:42,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:43,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-24 18:20:43,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:20:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 18:20:43,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:43,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 18:20:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-24 18:20:43,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:43,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:43,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:43,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:43,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:20:43,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:43,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:43,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:43,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:43,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:43,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:20:43,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:43,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 18:20:43,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:43,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:43,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:43,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:20:43,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:43,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517540975] [2020-09-24 18:20:43,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:43,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:43,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222699610] [2020-09-24 18:20:43,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:43,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:43,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:43,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:43,343 INFO L87 Difference]: Start difference. First operand 988 states and 1231 transitions. Second operand 5 states. [2020-09-24 18:20:45,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:45,175 INFO L93 Difference]: Finished difference Result 2684 states and 3490 transitions. [2020-09-24 18:20:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:45,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-24 18:20:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:45,190 INFO L225 Difference]: With dead ends: 2684 [2020-09-24 18:20:45,191 INFO L226 Difference]: Without dead ends: 1720 [2020-09-24 18:20:45,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:45,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2020-09-24 18:20:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1276. [2020-09-24 18:20:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-09-24 18:20:45,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1571 transitions. [2020-09-24 18:20:45,269 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1571 transitions. Word has length 147 [2020-09-24 18:20:45,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:45,269 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1571 transitions. [2020-09-24 18:20:45,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1571 transitions. [2020-09-24 18:20:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 18:20:45,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:45,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:45,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:20:45,276 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:45,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:45,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1709240601, now seen corresponding path program 1 times [2020-09-24 18:20:45,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:45,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811992540] [2020-09-24 18:20:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:45,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:45,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:45,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:45,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:45,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:50,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:50,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 18:20:50,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:20:50,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:20:50,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 18:20:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 18:20:50,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:50,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:50,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:50,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:50,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:50,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:20:50,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:50,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:50,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:50,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:50,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:50,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 18:20:50,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:50,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 18:20:50,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:20:50,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:50,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811992540] [2020-09-24 18:20:50,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:50,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:20:50,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724325210] [2020-09-24 18:20:50,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:20:50,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:50,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:20:50,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:20:50,577 INFO L87 Difference]: Start difference. First operand 1276 states and 1571 transitions. Second operand 5 states. [2020-09-24 18:20:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:52,531 INFO L93 Difference]: Finished difference Result 3480 states and 4432 transitions. [2020-09-24 18:20:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:20:52,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-24 18:20:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:52,544 INFO L225 Difference]: With dead ends: 3480 [2020-09-24 18:20:52,544 INFO L226 Difference]: Without dead ends: 2228 [2020-09-24 18:20:52,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:20:52,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2020-09-24 18:20:52,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2158. [2020-09-24 18:20:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2158 states. [2020-09-24 18:20:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 2688 transitions. [2020-09-24 18:20:52,627 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 2688 transitions. Word has length 153 [2020-09-24 18:20:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:52,627 INFO L479 AbstractCegarLoop]: Abstraction has 2158 states and 2688 transitions. [2020-09-24 18:20:52,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:20:52,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 2688 transitions. [2020-09-24 18:20:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 18:20:52,638 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:52,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:52,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:20:52,639 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:52,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:52,640 INFO L82 PathProgramCache]: Analyzing trace with hash 926609686, now seen corresponding path program 1 times [2020-09-24 18:20:52,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:52,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716609302] [2020-09-24 18:20:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:52,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:52,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:52,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:54,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:57,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 18:20:57,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:20:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 18:20:57,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:20:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 18:20:57,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:57,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:57,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:57,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:57,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:20:57,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:57,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:57,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:20:57,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:57,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:57,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:57,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 18:20:57,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 18:20:57,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 18:20:57,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:58,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716609302] [2020-09-24 18:20:58,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:58,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:20:58,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957759562] [2020-09-24 18:20:58,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:58,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:58,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:58,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:58,076 INFO L87 Difference]: Start difference. First operand 2158 states and 2688 transitions. Second operand 7 states.