/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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:43,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:43,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:43,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:43,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:43,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:43,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:43,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:43,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:43,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:43,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:43,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:43,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:43,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:43,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:43,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:43,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:43,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:43,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:43,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:43,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:43,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:43,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:43,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:43,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:43,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:43,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:43,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:43,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:43,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:43,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:43,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:43,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:43,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:43,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:43,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:43,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:43,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:43,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:43,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:43,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:43,768 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 09:05:43,812 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:43,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:43,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:43,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:43,814 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:43,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:43,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:43,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:43,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:43,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:43,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:43,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:43,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:43,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:43,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:43,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:43,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:43,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:43,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:43,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:43,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:43,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:43,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:43,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:43,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:43,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:43,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:43,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:43,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:43,819 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:05:44,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:44,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:44,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:44,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:44,328 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:44,329 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 09:05:44,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d389d109c/c5e1382bf0d24f54a8636eff5cc00180/FLAGf185340c9 [2020-09-25 09:05:45,077 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:45,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 09:05:45,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d389d109c/c5e1382bf0d24f54a8636eff5cc00180/FLAGf185340c9 [2020-09-25 09:05:45,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d389d109c/c5e1382bf0d24f54a8636eff5cc00180 [2020-09-25 09:05:45,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:45,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:45,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:45,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:45,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:45,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:45" (1/1) ... [2020-09-25 09:05:45,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f21738f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:45, skipping insertion in model container [2020-09-25 09:05:45,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:45" (1/1) ... [2020-09-25 09:05:45,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:45,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:45,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:45,957 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:46,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:46,119 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:46,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:46 WrapperNode [2020-09-25 09:05:46,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:46,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:46,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:46,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:46,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:46" (1/1) ... [2020-09-25 09:05:46,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:46" (1/1) ... [2020-09-25 09:05:46,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:46" (1/1) ... [2020-09-25 09:05:46,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:46" (1/1) ... [2020-09-25 09:05:46,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:46" (1/1) ... [2020-09-25 09:05:46,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:46" (1/1) ... [2020-09-25 09:05:46,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:46" (1/1) ... [2020-09-25 09:05:46,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:46,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:46,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:46,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:46,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:46" (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 09:05:46,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:46,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:46,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:46,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:46,327 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:46,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:47,761 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:47,761 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:47,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:47 BoogieIcfgContainer [2020-09-25 09:05:47,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:47,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:47,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:47,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:47,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:45" (1/3) ... [2020-09-25 09:05:47,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56305be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:47, skipping insertion in model container [2020-09-25 09:05:47,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:46" (2/3) ... [2020-09-25 09:05:47,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56305be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:47, skipping insertion in model container [2020-09-25 09:05:47,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:47" (3/3) ... [2020-09-25 09:05:47,781 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label36.c [2020-09-25 09:05:47,793 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:47,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:47,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:47,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:47,864 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:47,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:47,864 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:47,864 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:47,864 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:47,864 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:47,865 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 09:05:47,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:47,911 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] [2020-09-25 09:05:47,912 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:47,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:47,922 INFO L82 PathProgramCache]: Analyzing trace with hash -2108492313, now seen corresponding path program 1 times [2020-09-25 09:05:47,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:47,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134904440] [2020-09-25 09:05:47,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:49,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:49,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 09:05:49,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:49,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-09-25 09:05:49,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:49,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:49,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 09:05:49,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:05:49,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:49,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:49,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:49,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:49,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:49,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:05:49,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:49,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:49,201 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 09:05:49,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134904440] [2020-09-25 09:05:49,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:49,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:05:49,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122069038] [2020-09-25 09:05:49,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:05:49,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:49,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:05:49,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:49,235 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 09:05:52,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:52,227 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 09:05:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:05:52,229 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-09-25 09:05:52,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:52,254 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 09:05:52,255 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 09:05:52,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:52,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 09:05:52,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 09:05:52,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 09:05:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 09:05:52,432 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 58 [2020-09-25 09:05:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:52,433 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 09:05:52,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:05:52,434 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 09:05:52,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 09:05:52,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:52,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:52,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:05:52,445 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:52,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:52,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1020620813, now seen corresponding path program 1 times [2020-09-25 09:05:52,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:52,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615585041] [2020-09-25 09:05:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:52,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:53,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:57,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 09:05:57,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:57,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 09:05:57,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:57,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 09:05:57,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:57,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:57,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:57,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:57,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:05:57,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:57,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:57,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:57,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:57,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:57,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:57,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:57,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:58,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:58,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:58,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 09:05:58,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:58,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-25 09:05:58,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:58,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:58,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 09:05:58,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:58,301 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:58,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615585041] [2020-09-25 09:05:58,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:58,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:58,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870799031] [2020-09-25 09:05:58,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:58,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:58,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:58,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:58,306 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 10 states. [2020-09-25 09:06:01,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:01,984 INFO L93 Difference]: Finished difference Result 2066 states and 2891 transitions. [2020-09-25 09:06:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:01,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-09-25 09:06:01,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:01,999 INFO L225 Difference]: With dead ends: 2066 [2020-09-25 09:06:02,000 INFO L226 Difference]: Without dead ends: 1360 [2020-09-25 09:06:02,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:06:02,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-09-25 09:06:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1153. [2020-09-25 09:06:02,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2020-09-25 09:06:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1482 transitions. [2020-09-25 09:06:02,111 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1482 transitions. Word has length 150 [2020-09-25 09:06:02,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:02,112 INFO L479 AbstractCegarLoop]: Abstraction has 1153 states and 1482 transitions. [2020-09-25 09:06:02,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:02,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1482 transitions. [2020-09-25 09:06:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 09:06:02,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:02,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:02,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:02,118 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:02,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:02,118 INFO L82 PathProgramCache]: Analyzing trace with hash 529447495, now seen corresponding path program 1 times [2020-09-25 09:06:02,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:02,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000873771] [2020-09-25 09:06:02,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:02,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:07,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 09:06:07,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:07,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:06:07,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:07,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:07,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:06:07,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 09:06:07,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:07,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:07,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:07,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:07,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:07,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:06:07,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:07,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:07,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:06:07,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:07,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:07,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 09:06:07,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:07,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 09:06:07,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:07,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:07,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:07,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:07,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 09:06:07,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:07,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000873771] [2020-09-25 09:06:07,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:07,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:06:07,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154784262] [2020-09-25 09:06:07,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:06:07,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:07,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:06:07,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:07,675 INFO L87 Difference]: Start difference. First operand 1153 states and 1482 transitions. Second operand 8 states. [2020-09-25 09:06:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:10,481 INFO L93 Difference]: Finished difference Result 3141 states and 4252 transitions. [2020-09-25 09:06:10,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:06:10,482 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-09-25 09:06:10,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:10,496 INFO L225 Difference]: With dead ends: 3141 [2020-09-25 09:06:10,496 INFO L226 Difference]: Without dead ends: 2003 [2020-09-25 09:06:10,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:06:10,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2020-09-25 09:06:10,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1781. [2020-09-25 09:06:10,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1781 states. [2020-09-25 09:06:10,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2305 transitions. [2020-09-25 09:06:10,612 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2305 transitions. Word has length 166 [2020-09-25 09:06:10,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:10,612 INFO L479 AbstractCegarLoop]: Abstraction has 1781 states and 2305 transitions. [2020-09-25 09:06:10,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:06:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2305 transitions. [2020-09-25 09:06:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 09:06:10,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:10,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:10,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:06:10,620 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:10,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1782617119, now seen corresponding path program 1 times [2020-09-25 09:06:10,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:10,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039018454] [2020-09-25 09:06:10,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:10,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:13,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:14,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:15,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:15,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 09:06:15,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:15,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 09:06:15,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:15,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:15,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:15,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:15,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-25 09:06:15,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:15,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:15,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:15,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:15,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:15,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:15,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:06:15,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:15,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:15,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:15,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:15,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:15,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:15,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:15,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:16,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:16,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 09:06:16,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:16,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-09-25 09:06:16,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:16,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:16,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 09:06:16,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:16,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039018454] [2020-09-25 09:06:16,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:16,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:16,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555790122] [2020-09-25 09:06:16,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:16,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:16,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:16,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:16,662 INFO L87 Difference]: Start difference. First operand 1781 states and 2305 transitions. Second operand 10 states. [2020-09-25 09:06:20,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:20,508 INFO L93 Difference]: Finished difference Result 4238 states and 5630 transitions. [2020-09-25 09:06:20,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:06:20,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 190 [2020-09-25 09:06:20,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:20,535 INFO L225 Difference]: With dead ends: 4238 [2020-09-25 09:06:20,536 INFO L226 Difference]: Without dead ends: 2444 [2020-09-25 09:06:20,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:06:20,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2020-09-25 09:06:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2256. [2020-09-25 09:06:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2256 states. [2020-09-25 09:06:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2845 transitions. [2020-09-25 09:06:20,659 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2845 transitions. Word has length 190 [2020-09-25 09:06:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:20,660 INFO L479 AbstractCegarLoop]: Abstraction has 2256 states and 2845 transitions. [2020-09-25 09:06:20,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2845 transitions. [2020-09-25 09:06:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-25 09:06:20,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:20,669 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:20,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:20,670 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:20,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:20,671 INFO L82 PathProgramCache]: Analyzing trace with hash 288587271, now seen corresponding path program 1 times [2020-09-25 09:06:20,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:20,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041487913] [2020-09-25 09:06:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:20,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:20,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:20,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:23,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:23,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:23,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:25,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:25,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-25 09:06:25,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:06:25,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:06:25,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:25,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:25,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-25 09:06:25,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:25,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:25,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:25,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:25,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:06:25,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:25,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:25,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:25,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:25,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:25,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:26,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:26,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:26,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:26,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:26,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:26,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 09:06:26,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:26,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 09:06:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:26,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:06:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:26,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:26,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:26,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 09:06:26,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:26,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-09-25 09:06:26,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:26,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:26,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 09:06:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 09:06:26,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041487913] [2020-09-25 09:06:26,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:26,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:26,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406880684] [2020-09-25 09:06:26,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:26,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:26,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:26,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:26,900 INFO L87 Difference]: Start difference. First operand 2256 states and 2845 transitions. Second operand 10 states. [2020-09-25 09:06:29,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:29,031 INFO L93 Difference]: Finished difference Result 4380 states and 5537 transitions. [2020-09-25 09:06:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:06:29,032 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 267 [2020-09-25 09:06:29,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:29,046 INFO L225 Difference]: With dead ends: 4380 [2020-09-25 09:06:29,046 INFO L226 Difference]: Without dead ends: 2116 [2020-09-25 09:06:29,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:06:29,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2020-09-25 09:06:29,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2100. [2020-09-25 09:06:29,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2100 states. [2020-09-25 09:06:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2642 transitions. [2020-09-25 09:06:29,118 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2642 transitions. Word has length 267 [2020-09-25 09:06:29,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:29,119 INFO L479 AbstractCegarLoop]: Abstraction has 2100 states and 2642 transitions. [2020-09-25 09:06:29,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:29,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2642 transitions. [2020-09-25 09:06:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-09-25 09:06:29,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:29,129 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:06:29,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:06:29,130 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:29,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:29,130 INFO L82 PathProgramCache]: Analyzing trace with hash 653022738, now seen corresponding path program 1 times [2020-09-25 09:06:29,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:29,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554303625] [2020-09-25 09:06:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:29,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:29,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:32,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking...